CN110033592B - Carbon monoxide sensor alarm method, device and computer storage medium - Google Patents
Carbon monoxide sensor alarm method, device and computer storage medium Download PDFInfo
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- CN110033592B CN110033592B CN201910356079.4A CN201910356079A CN110033592B CN 110033592 B CN110033592 B CN 110033592B CN 201910356079 A CN201910356079 A CN 201910356079A CN 110033592 B CN110033592 B CN 110033592B
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Abstract
The invention discloses a carbon monoxide sensor alarm method, a carbon monoxide sensor alarm device and a computer storage medium, and belongs to the technical field of intelligent household appliances. The method comprises the following steps: in an application environment, monitoring the oscillation frequency of a resistance-inductance RL circuit in the carbon monoxide sensor within a first set time in real time; when the oscillation times are larger than the set times, acquiring the average period value among the oscillation wave crests of the set number in the first set time and the average wave crest value of the oscillation wave crests of the set number; when the average period value is less than or equal to the stored calibration period value corresponding to the carbon monoxide sensor and the average wave crest value is greater than or equal to the stored calibration peak value corresponding to the carbon monoxide sensor, increasing the alarm duration by a set value; and when the increased alarm duration is greater than or equal to a second set time, controlling the carbon monoxide sensor to alarm. Therefore, the occupation of resources can be reduced, and the CO alarming efficiency is improved.
Description
Technical Field
The invention relates to the technical field of intelligent household appliances, in particular to a carbon monoxide sensor alarming method, a carbon monoxide sensor alarming device and a computer storage medium.
Background
With the rapid development of intelligent household appliances, many household appliances have an alarm function. For example: the household appliances such as gas water heaters and gas stoves which can possibly generate carbon monoxide can all give an alarm for carbon monoxide, and specifically, the carbon monoxide concentration in the environment can be checked by the corresponding carbon monoxide sensor, and the alarm can be given when the detected carbon monoxide concentration is greater than the set concentration.
At present, a detection circuit in a carbon monoxide CO sensor comprises a resistance-inductance RL circuit, and the voltage of the RL circuit oscillates back and forth in a CO environment, so that an oscillation curve in a corresponding time can be obtained, and the integrated area under the oscillation curve can be the detected carbon monoxide concentration.
Disclosure of Invention
The embodiment of the invention provides a carbon monoxide sensor alarm method, a carbon monoxide sensor alarm device and a computer storage medium. The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.
According to a first aspect of embodiments of the present invention, there is provided a method for carbon monoxide sensor alarm, including:
in an application environment, monitoring the oscillation frequency of a resistance-inductance RL circuit in the carbon monoxide sensor within a first set time in real time;
when the oscillation times are larger than the set times, acquiring the average period value among the oscillation wave crests of the set number in the first set time and the average wave crest value of the oscillation wave crests of the set number;
when the average period value is smaller than or equal to the stored calibration period value corresponding to the carbon monoxide sensor and the average wave peak value is larger than or equal to the stored calibration peak value corresponding to the carbon monoxide sensor, increasing the alarm duration by a set value;
and when the increased alarm duration is greater than or equal to a second set time, controlling the carbon monoxide sensor to alarm.
In an embodiment of the present invention, before the real-time monitoring of the oscillation frequency of the resistor-inductor RL circuit in the carbon monoxide sensor within the first set time, the method includes:
in a calibration scene, monitoring the first calibration oscillation frequency of a resistance-inductance RL circuit in a carbon monoxide sensor in real time within a first calibration time;
when the first calibration oscillation frequency is greater than the calibration frequency, removing the calibration gas in the calibration scene, and monitoring the second calibration oscillation frequency of a resistance-inductance RL circuit in the carbon monoxide sensor in a scene without the calibration gas within a second calibration time in real time;
and when the second calibration oscillation frequency is zero, acquiring the peak average value and the cycle average value of the oscillation peaks in the calibrated number within the first calibration time, determining the peak average value as the calibration peak value and then storing the peak average value, and determining the cycle average value as the calibration cycle value and then storing the cycle average value.
In an embodiment of the present invention, the monitoring the oscillation frequency of the resistor-inductor RL circuit in the carbon monoxide sensor in real time within a first set time includes:
carrying out current sampling on voltages at two ends of the RL circuit to obtain a current sampling voltage value;
if the voltage difference value between the current sampling voltage value and the previous sampling voltage value is a positive value, the absolute value of the voltage difference value is larger than a first set value, and the trend of the current sampling curve corresponding to the current sampling point is a descending trend, the trend of the current sampling curve is updated to be an ascending trend, the previous sampling voltage value is determined as the current oscillating wave trough value and then stored, and the previous sampling time is determined as the wave trough time corresponding to the current oscillating wave trough and then stored;
when the voltage difference value between the current sampling voltage value and the previous sampling voltage value is a negative value, the absolute value of the voltage difference value is larger than a second set value, and the current sampling curve trend corresponding to the current sampling point is an ascending trend, updating the current sampling curve trend to a descending trend, determining the previous sampling voltage value as a candidate wave peak value of the current oscillation, and determining the previous sampling time as a candidate wave peak time corresponding to the wave peak of the current oscillation;
when the difference between the candidate peak time and the trough time corresponding to the trough of the previous oscillation is greater than a first set time, the difference between the current sampling time and the candidate peak time is less than a second set time, and the voltage difference between the candidate peak value and the trough value corresponding to the trough of the previous oscillation is greater than a set voltage difference, increasing the oscillation frequency within the first set time once, determining the candidate peak value as the peak value of the current oscillation and then storing the candidate peak time, and determining the candidate peak time as the peak time corresponding to the peak of the current oscillation and then storing the candidate peak time.
In an embodiment of the present invention, the method further includes:
when the increased alarm duration time is less than a second set time, continuing to monitor the oscillation times of a resistance-inductance RL circuit in the carbon monoxide sensor in real time within the first set time;
and when the average wave peak value is smaller than the stored calibration peak value or when the average period value is larger than the stored calibration period value, clearing the alarm duration time.
According to a second aspect of an embodiment of the present invention, there is provided a carbon monoxide sensor alarm device including:
the monitoring unit is used for monitoring the oscillation frequency of a resistor-inductor RL circuit in the carbon monoxide sensor in real time within a first set time in an application environment;
the obtaining unit is used for obtaining the average period value among the oscillation wave crests of the set number in the first set time and the average wave crest value of the oscillation wave crests of the set number when the oscillation frequency is greater than the set frequency;
the updating unit is used for increasing the alarm duration by a set value when the average period value is less than or equal to the stored calibration period value corresponding to the carbon monoxide sensor and the average peak value is greater than or equal to the stored calibration peak value corresponding to the carbon monoxide sensor;
and the alarm unit is used for controlling the carbon monoxide sensor to alarm when the increased alarm duration time is greater than or equal to a second set time.
In an embodiment of the present invention, the apparatus further includes:
the first calibration monitoring unit is used for monitoring the first calibration oscillation times of a resistor-inductor RL circuit in the carbon monoxide sensor in real time within a first calibration time in a calibration scene;
the second calibration monitoring unit is used for removing calibration gas in the calibration scene when the first calibration oscillation frequency is greater than the calibration frequency, and monitoring the second calibration oscillation frequency of a resistor-inductor RL circuit in the carbon monoxide sensor in a scene without calibration gas within a second calibration time in real time;
and the calibration storage unit is used for acquiring the peak average value and the cycle average value of the oscillation peaks of the calibrated number in the first calibration time when the second calibration oscillation frequency is zero, determining the peak average value as the calibration peak value and then storing the peak average value, and determining the cycle average value as the calibration cycle value and then storing the calibration cycle value.
In an embodiment of the present invention, the monitoring unit includes:
the acquisition subunit is used for carrying out current sampling on the voltages at two ends of the RL circuit and acquiring a current sampling voltage value;
a trough determining subunit, configured to update a current sampling curve trend to an ascending trend if a voltage difference between the current sampling voltage value and a previous sampling voltage value is a positive value, an absolute value of the voltage difference is greater than a first set value, and a current sampling curve trend corresponding to the current sampling point is a descending trend, determine the previous sampling voltage value as a currently oscillating trough value, and store the previous sampling time as a trough time corresponding to the currently oscillating trough;
a candidate peak determining subunit, configured to update a current sampling curve trend to a descending trend, determine a previous sampling voltage value as a candidate peak value of the current oscillation, and determine a previous sampling time as a candidate peak time corresponding to the peak of the current oscillation when a voltage difference value between the current sampling voltage value and the previous sampling voltage value is a negative value, an absolute value of the voltage difference value is greater than a second set value, and a current sampling curve trend corresponding to the current sampling point is an ascending trend;
and the oscillation determining subunit is configured to, when a difference between the candidate peak time and the trough time corresponding to the trough of the previous oscillation is greater than a first set time, a difference between the current sampling time and the candidate peak time is less than a second set time, and a voltage difference between the candidate peak value and the trough value corresponding to the trough of the previous oscillation is greater than a set voltage difference, increase the number of oscillations in the first set time once, determine the candidate peak value as the peak value of the current oscillation, and store the candidate peak time as the peak time corresponding to the peak of the current oscillation.
In an embodiment of the present invention, the apparatus further includes:
the calling unit is used for continuing calling the monitoring unit when the increased alarm duration is less than a second set time;
and the clearing unit is used for clearing the alarm duration time when the average crest value is smaller than the stored calibration crest value or when the average period value is larger than the stored calibration period value.
According to a third aspect of the embodiments of the present invention, there is provided an apparatus for a carbon monoxide sensor alarm, the apparatus being used for a terminal, the apparatus including:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
in an application environment, monitoring the oscillation frequency of a resistance-inductance RL circuit in the carbon monoxide sensor within a first set time in real time;
when the oscillation times are larger than the set times, acquiring the average period value among the oscillation wave crests of the set number within the first set time and the average wave crest value of the oscillation wave crests of the set number;
when the average period value is smaller than or equal to the stored calibration period value corresponding to the carbon monoxide sensor and the average wave peak value is larger than or equal to the stored calibration peak value corresponding to the carbon monoxide sensor, increasing the alarm duration by a set value;
and when the increased alarm duration is greater than or equal to a second set time, controlling the carbon monoxide sensor to alarm.
According to a fourth aspect of the embodiments of the present invention, there is provided a computer readable storage medium having stored thereon computer instructions, wherein the instructions, when executed by a processor, implement the steps of the above-mentioned method.
The technical scheme provided by the embodiment of the invention can have the following beneficial effects:
in the embodiment of the invention, the oscillation times of the RL circuit in the CO sensor, the average period value among the oscillation wave crests and the average wave crest value of the oscillation wave crests can be determined within a certain time, and then the CO alarm can be directly carried out when the oscillation times, the average period value and the average wave crest value respectively meet the corresponding alarm conditions, so that the complex integral calculation is not needed, the occupation of resources is reduced, and the CO alarm efficiency is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a flow chart illustrating a carbon monoxide sensor alarm method in accordance with an exemplary embodiment;
FIG. 2 is a flow chart illustrating a carbon monoxide sensor oscillation calibration in accordance with an exemplary embodiment;
FIG. 3 is a flow chart illustrating a carbon monoxide sensor alarm method in accordance with an exemplary embodiment;
FIG. 4-1 is a flow diagram illustrating a carbon monoxide sensor oscillation monitoring in accordance with an exemplary embodiment;
FIG. 4-2 is a flow diagram illustrating a carbon monoxide sensor oscillation monitoring in accordance with an exemplary embodiment;
fig. 5 is a block diagram illustrating a carbon monoxide sensor alarm device in accordance with an exemplary embodiment.
Detailed Description
The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of embodiments of the invention encompasses the full ambit of the claims, as well as all available equivalents of the claims. Embodiments may be referred to herein, individually or collectively, by the term "invention" merely for convenience and without intending to voluntarily limit the scope of this application to any single invention or inventive concept if more than one is in fact disclosed. Herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed. The various embodiments are described in a progressive manner, with each embodiment focusing on differences from the other embodiments, and with like parts being referred to one another. For the structures, products and the like disclosed by the embodiments, the description is relatively simple because the structures, the products and the like correspond to the parts disclosed by the embodiments, and the relevant parts can be just described by referring to the method part.
In clean air, the voltage across the RL circuit in the CO sensor is basically constant, namely no oscillation occurs, and when the CO sensor is in an environment containing CO gas, the impedance in the CO sensor is in an oscillatory change, so that the voltage across the RL circuit can be caused to be in an oscillatory change, and the higher the CO concentration is, the faster the voltage across the RL circuit is in oscillation, and the larger the amplitude is. Therefore, in the embodiment of the invention, the oscillation times of the RL circuit in the CO sensor, the average period value among the oscillation wave crests and the average wave crest value of the oscillation wave crests can be determined within a certain time, and then the CO alarm can be directly carried out when the oscillation times, the average period value and the average wave crest value respectively meet the corresponding alarm conditions, so that the complex integral calculation is not needed, the occupation of resources is reduced, and the CO alarm efficiency is improved.
Fig. 1 is a flow chart illustrating a carbon monoxide sensor alarm method in accordance with an exemplary embodiment. As shown in fig. 1, the process of the carbon monoxide sensor alarm may include:
step 101: in an application environment, the oscillation frequency of a resistance-inductance RL circuit in the carbon monoxide sensor within a first set time is monitored in real time.
At present, intelligent household appliances such as a gas stove, a gas water heater and the like are provided with CO sensors. In clean air, the voltage across the RL circuit in the CO sensor is substantially constant, i.e., does not oscillate, while in an environment containing CO gas, the impedance in the CO sensor changes in an oscillating manner, which may cause the voltage across the RL circuit to change in an oscillating manner. Therefore, the oscillation frequency of the resistance-inductance RL circuit in the carbon monoxide sensor in the first set time can be monitored in real time.
Step 102: and when the oscillation frequency is greater than the set frequency, acquiring the average period value among the set number of oscillation wave crests in the first set time and the average wave crest value of the set number of oscillation wave crests.
Because the voltage across the RL circuit in the CO sensor is in an oscillating change when the CO sensor is in an environment containing CO gas, and the higher the CO concentration is, the faster the voltage across the RL circuit oscillates in frequency, and the larger the amplitude is. Therefore, a number of times, that is, a set number of times, may be preset, and when the oscillation number of times is greater than the set number of times, it indicates that there is a possibility that an alarm needs to be performed, and at this time, further, an alarm determination may be performed according to the oscillation period and the oscillation peak value, so that the average period value between the set number of oscillation peaks within the first set time and the average wave peak value of the set number of oscillation peaks may be obtained.
Wherein, obtaining the average period value among the oscillation wave crests of the set number within the first set time may include: and determining a first peak time corresponding to the first oscillation peak and a second peak time corresponding to the last oscillation peak within a first set time, and then obtaining an average period value corresponding to the first set time according to the first peak time, the second peak time and the oscillation times. Or, several continuous oscillation wave crests are randomly selected, and the average period value can be determined according to the corresponding time. Preferably, a time difference between the last oscillation peak within the first set time and the first oscillation peaks of the previous set number that are consecutively recurred is obtained, and then the average period value corresponding to the first set time is obtained according to the time difference and the set number.
Similarly, obtaining the average wave peak value of the set number of oscillation wave peaks may include: and summing and averaging the wave peak values corresponding to each oscillation wave peak within the first set time to obtain an average wave peak value within the first set time. Or randomly selecting a plurality of continuous oscillation wave crests, and then summing and averaging the wave crest values corresponding to each selected oscillation wave crest to obtain an average wave crest value in the first set time. Preferably, the peak value of each oscillation peak between the last oscillation peak and the first oscillation peaks of the set number of consecutive recursions within the first set time is obtained, and the average peak value within the first set time is obtained after summing and averaging.
Step 103: and when the average period value is less than or equal to the stored calibration period value corresponding to the carbon monoxide sensor and the average wave peak value is greater than or equal to the stored calibration peak value corresponding to the carbon monoxide sensor, increasing the alarm duration by a set value.
When the average period value is smaller than or equal to the stored calibration period value corresponding to the carbon monoxide sensor and the average wave peak value is larger than or equal to the stored calibration peak value corresponding to the carbon monoxide sensor, the alarm duration is increased by a set value, and the alarm duration can be increased by a set value.
In order to reduce the decrease of the average period value and the increase of the average peak value caused by accidental factors, an alarm duration time can be preset, and the initial value can be zero, so that the alarm duration time can be increased by a set value, for example, 1 by determining that the average period value and the average peak value corresponding to the oscillation of the voltage at the two ends of the RL circuit respectively meet the initial values.
Step 104: and when the increased alarm duration time is greater than or equal to a second set time, controlling the carbon monoxide sensor to alarm.
Because the increased alarm duration is very long and is more than or equal to the second set time, at the moment, in order to ensure the personal and property safety, the CO alarm must be carried out.
It can be seen that, in this embodiment, the oscillation frequency of the RL circuit in the CO sensor, the average period value between the oscillation peaks, and the average crest value of the oscillation peaks are determined within a certain time, and then when the oscillation frequency, the average period value, and the average crest value respectively satisfy the corresponding alarm conditions, the CO alarm can be directly performed, so that complex integral calculation is not required, the occupation of resources is reduced, and the efficiency of the CO alarm is improved.
Certainly, since the increased alarm duration is greater than or equal to the second set time, the CO alarm is performed, and therefore, when the average crest value is smaller than the stored calibration crest value or when the average period value is greater than the stored calibration period value, the alarm duration needs to be cleared. Monitoring then resumes and accumulation of alarm duration begins. Of course, when the increased alarm duration is less than the second set time, the process also returns to step 101 to continue monitoring the oscillation frequency of the RL circuit in real time within the first set time. Therefore, the continuity and the reliability of the CO alarm can be guaranteed.
When the average period value is less than or equal to the stored calibration period value corresponding to the carbon monoxide sensor and the average wave crest value is greater than or equal to the stored calibration peak value corresponding to the carbon monoxide sensor, the alarm duration time is increased by a set value; the alarm duration will be increased. Therefore, the carbon monoxide sensor needs to be calibrated before the CO can be used. Before real-time monitoring the oscillation frequency of the resistance-inductance RL circuit in the carbon monoxide sensor within the first set time, the method comprises the following steps: in a calibration scene, monitoring the first calibration oscillation frequency of a resistor-inductor RL circuit in a carbon monoxide sensor within a first calibration time in real time; when the first calibration oscillation frequency is larger than the calibration frequency, removing calibration gas in a calibration scene, and monitoring the second calibration oscillation frequency of a resistance-inductance RL circuit in the carbon monoxide sensor in a scene without calibration gas within a second calibration time in real time; and when the second calibration oscillation frequency is zero, acquiring the peak average value and the cycle average value of the oscillation peaks in the calibration number within the first calibration time, determining the peak average value as the calibration peak value and then storing the peak average value, and determining the cycle average value as the calibration cycle value and then storing the cycle average value.
Because the voltage at the two ends of the RL circuit in the CO sensor changes in an oscillatory manner when the CO sensor is in an environment containing CO gas, the oscillation frequency of the resistance-inductance RL circuit in the carbon monoxide sensor within a first set time can be monitored in real time, and the monitoring method specifically includes: carrying out current sampling on voltages at two ends of the RL circuit to obtain a current sampling voltage value; if the voltage difference value between the current sampling voltage value and the previous sampling voltage value is a positive value, the absolute value of the voltage difference value is larger than a first set value, and the current sampling curve trend corresponding to the current sampling point is a descending trend, the current sampling curve trend is updated to be an ascending trend, the previous sampling voltage value is determined to be a current oscillating trough value and then stored, and the previous sampling time is determined to be the current oscillating trough time and then stored; when the voltage difference value between the current sampling voltage value and the previous sampling voltage value is a negative value, the absolute value of the voltage difference value is larger than a second set value, and the current sampling curve trend corresponding to the current sampling point is an ascending trend, updating the current sampling curve trend to a descending trend, determining the previous sampling voltage value as a candidate wave peak value of the current oscillation, and determining the previous sampling time as a candidate wave peak time corresponding to the current oscillation wave peak; when the difference between the candidate peak time and the trough time corresponding to the trough of the previous oscillation is greater than a first set time, the difference between the current sampling time and the candidate peak time is less than a second set time, and the voltage difference between the candidate peak value and the trough time corresponding to the trough of the previous oscillation is greater than a set voltage difference, increasing the oscillation frequency within the first set time once, determining the candidate peak value as the peak value of the current oscillation, and then saving the candidate peak time, and determining the candidate peak time as the peak time corresponding to the peak of the current oscillation, and then saving the candidate peak time.
Therefore, in the real-time monitoring process, non-effective oscillation can be eliminated according to the sampling voltage value and the sampling time, the effective oscillation frequency is ensured, and the reliability of CO alarming is improved.
The following operational flows are integrated into the specific embodiments to illustrate the control method provided by the embodiments of the present invention.
In this embodiment, the CO sensor is calibrated. The first calibration time is 180s, the calibration times is 6, and the second calibration time is 60 s. Of course, the first calibration time, the calibration times and the second calibration time may not be limited thereto, and may be set according to the performance of the CO sensor and the environment in other embodiments.
FIG. 2 is a flow chart illustrating a carbon monoxide sensor oscillation calibration according to an exemplary embodiment. As shown in fig. 2, the process of calibrating the oscillation of the CO sensor includes:
step 201: and monitoring the first calibration oscillation frequency of an RL circuit in the carbon monoxide sensor in the closed calibration container within 180s in real time.
Here, the calibration scenario is a calibration vessel into which CO gas of a calibration concentration is injected and which has been diffused uniformly and stably.
The specific process of monitoring the first calibration oscillation frequency of the resistance-inductance RL circuit in the carbon monoxide sensor in real time within the first calibration time may be the same as the process of monitoring the oscillation frequency of the resistance-inductance RL circuit in the carbon monoxide sensor in real time within the first set time in an application environment.
Step 202: is the first calibration oscillation frequency > 6? If yes, go to step 203, otherwise, go back to step 201.
Step 203: and monitoring the second calibration oscillation frequency of the RL circuit in the carbon monoxide sensor in the calibration container after the CO gas is removed within 20s in real time.
Here, the calibration vessel may be opened to remove CO gas, or after waiting 60 seconds, the calibration vessel may be opened to remove CO gas. Of course, the specific process of monitoring the second calibration oscillation frequency of the resistance-inductance RL circuit in the carbon monoxide sensor in the calibration container after the CO gas is removed in real time may be the same as the process of monitoring the oscillation frequency of the resistance-inductance RL circuit in the carbon monoxide sensor in real time within the first set time in the application environment.
Step 204: determine whether the second calibration oscillation frequency is equal to 0? If yes, go to step 205, otherwise return to step 203.
Step 205: and acquiring the peak average value and the cycle average value of the oscillation peaks in the calibrated number within 180s, determining the peak average value as a calibrated peak value and then storing the calibrated peak average value, and determining the cycle average value as a calibrated cycle value and then storing the calibrated cycle value.
Preferably, the first oscillation peak and the last two oscillation peaks of all the oscillations within the last 180s are removed, then the average value of the corresponding peaks and the period average value of the remaining oscillation peaks are obtained, and then the corresponding calibration peak and calibration period under the calibration scenario are saved.
Therefore, the CO sensor can be calibrated in a calibration container filled with CO gas with calibration concentration, and a corresponding calibration peak value and a calibration period value under a calibration scene are obtained. Thus, a reference standard in a CO sensor application scenario may be determined.
In this embodiment, the CO sensor is calibrated as described above, and can be applied to environmental monitoring. Here, the first setting time is also 180s, but is not limited thereto, and the first setting time may be 120s, 200s, 250s, and the like in other embodiments, which are not specifically listed. Also, the number of times of setting may be 6, and the second set time may be the same as or different from the first set time, and here, the second set time may also be 180 s. Of course, the first setting time, the second setting time, and the setting times are not limited to these, and are not specifically listed. The initial value of the alarm duration is of course zero and the increase set point may be 60.
Fig. 3 is a flow chart illustrating a carbon monoxide sensor alarm method according to an exemplary embodiment. As shown in fig. 3, the process of the carbon monoxide sensor alarm may include:
step 301: in an application environment, the oscillation frequency of an RL circuit in the carbon monoxide sensor within 180s is monitored in real time.
Step 302: is the number of oscillations > 6? If yes, go to step 303, otherwise, go back to step 301.
Step 303: and acquiring a time difference value between the last oscillation peak and the 5 corresponding first oscillation peaks which are continuously recurred in the 180s, and determining an average period value corresponding to the first set time according to the time difference value.
Step 304: is the average period value determined to be less than or equal to the calibration period value? If so, go to step 305, otherwise, go to step 310.
Step 305: and summing and averaging the last oscillation wave peak, the first oscillation wave peak and the wave peak value corresponding to each oscillation wave peak between the last oscillation wave peak and the first oscillation wave peak to obtain an average wave peak value corresponding to the first set time.
Step 306: is it judged that the average peak value is not less than the calibration peak value? If so, go to step 307, otherwise, go to step 310.
Step 307: the alarm duration is increased by 60.
Step 308: is the increased alarm duration judged to be equal to or greater than 180? If yes, go to step 309, otherwise, go back to step 301.
Step 309: and performing CO alarm processing. The process is finished.
Step 310: and clearing the alarm duration time and returning to the step 301.
Therefore, in this embodiment, the oscillation frequency of the RL circuit in the CO sensor, the average period value between the oscillation peaks, and the average crest value of the oscillation peaks may be determined within a certain time, and then when the oscillation frequency, the average period value, and the average crest value respectively satisfy the corresponding alarm conditions, the CO alarm may be directly performed, so that complex integral calculation is not required, the occupation of resources is reduced, and the alarm efficiency is improved. And the alarm processing is carried out when the alarm duration reaches 180s, so that the probability of false alarm caused by accidental factors is greatly reduced.
In the above embodiment, the oscillation frequency is determined first, and then the oscillation amplitude is determined, but the invention is not limited thereto, and the oscillation amplitude may be determined first, and the steps 305, 306, 303, and 304 are performed first when the oscillation frequency is determined. Alternatively, step 303 and step 305 are performed simultaneously, and then step 303,306 is performed separately. The specific judgment process is not described one by one.
In both the calibration process of the CO sensor and the alarm process of the CO sensor, the oscillation frequency of the resistance-inductance RL circuit in the CO sensor needs to be detected within a certain time.
FIG. 4-1 is a flow diagram illustrating a carbon monoxide sensor oscillation monitoring according to an exemplary embodiment; fig. 4-2 is a flow diagram illustrating a carbon monoxide sensor oscillation monitoring in accordance with an exemplary embodiment. As shown in fig. 4-1 and 4-2, the oscillation monitoring process of the co sensor includes:
step 401: and in a first set time, carrying out current sampling on the voltages at two ends of the RL circuit to obtain a current sampling voltage value.
Here, the sampling interval may be once 20ms, and the first set time may be 180s corresponding to the above.
Step 402: is the voltage difference between the current sampled voltage value and the previous sampled voltage value determined to be a positive value? If so, go to step 403, otherwise go to step 406.
Step 403: determine whether the trend of the current sampling curve corresponding to the current sampling point is a downward trend? If so, go to step 404, otherwise, go to step 414.
Step 404: is it judged whether the absolute value of the voltage difference is greater than the first set value? If yes, go to step 405, otherwise, go back to step 401 and continue sampling.
Here, the first set value may be 30 mv.
Step 405: and updating the trend of the current sampling curve into an ascending trend, determining the previous sampling voltage value as the current oscillating trough value and then storing the previous sampling voltage value, and determining the previous sampling time as the trough time corresponding to the current oscillating trough and then storing the previous sampling time. And proceeds to step 414.
Step 406: is the voltage difference between the current sampled voltage value and the previous sampled voltage value determined to be negative? If so, go to step 407, otherwise go to step 414.
Step 407: determine whether the trend of the current sampling curve corresponding to the current sampling point is an ascending trend? If so, go to step 408, otherwise, go to step 414.
Step 408: is the absolute value of the voltage difference greater than the second set value? If yes, go to step 409, otherwise, go back to step 401 and continue sampling.
Here, the second set value may be 100 mv.
Step 409: updating the trend of the current sampling curve to a descending trend, determining the previous sampling voltage value as a candidate wave peak value of the current oscillation, and determining the previous sampling time as candidate wave peak time corresponding to the wave peak of the current oscillation.
Step 410: is it determined that the difference between the candidate peak time and the trough time corresponding to the trough of the previous oscillation is greater than the first predetermined time? If so, go to step 411, otherwise, go to step 414.
Here, the first set time may be 0.5 s.
Step 411: is it determined whether the difference between the current sampling time and the candidate peak time is less than a second set time? If so, go to step 412, otherwise, go to step 414.
Here, the second set time is 1 s.
Step 412: is it determined that the voltage difference between the candidate peak and the trough corresponding to the trough of the previous oscillation is greater than the set voltage difference? If so, go to step 413, otherwise, go to step 414.
Here, the set voltage value may be 200 mv.
Step 413: and increasing the oscillation frequency within the first set time once, determining the candidate wave peak value as the wave peak value of the current oscillation and then storing, and determining the candidate wave peak time as the wave peak time corresponding to the wave peak of the current oscillation and then storing. And proceeds to step 414.
Step 414: and saving the current sampling voltage value and the current sampling time.
Of course, after the sampling is finished, the step 401 may be returned to continue the sampling.
Therefore, in this embodiment, the peak judgment, the trough judgment, the waveform amplitude judgment, the peak voltage reduction rate judgment, and the half-oscillation period time judgment are performed respectively, and the oscillation frequency is determined according to the judgment result, so that the interference waveform can be removed, the monitoring precision is improved, and the reliability of CO alarm is further improved.
Similarly, the sampling time interval, the first set value, the second set value, the first set time, the second set time, the set voltage difference, and the like in the above embodiments are not limited to these, and are not specifically listed.
According to the process of the carbon monoxide sensor alarming, a carbon monoxide sensor alarming device can be constructed.
Fig. 5 is a block diagram illustrating a carbon monoxide sensor alarm device in accordance with an exemplary embodiment. As shown in fig. 5, the apparatus may include: a monitoring unit 510, an acquisition unit 520, an update unit 530 and an alarm unit 540.
The monitoring unit 510 is configured to monitor, in real time, the oscillation frequency of the resistor-inductor RL circuit in the carbon monoxide sensor within a first set time in an application environment.
The obtaining unit 520 is configured to obtain an average period value between a set number of oscillation peaks within a first set time and an average peak value of the set number of oscillation peaks when the oscillation frequency is greater than the set frequency.
An updating unit 530, configured to increase the alarm duration by a set value when the average period value is less than or equal to the stored calibration period value corresponding to the carbon monoxide sensor and the average peak value is greater than or equal to the stored calibration peak value corresponding to the carbon monoxide sensor.
And an alarm unit 540 for controlling the carbon monoxide sensor to alarm when the increased alarm duration is greater than or equal to a second set time.
In an embodiment of the present invention, the apparatus further includes:
and the first calibration monitoring unit is used for monitoring the first calibration oscillation frequency of a resistor-inductor RL circuit in the carbon monoxide sensor in a first calibration time in real time in a calibration scene.
And the second calibration monitoring unit is used for removing calibration gas in a calibration scene when the first calibration oscillation frequency is greater than the calibration frequency, and monitoring the second calibration oscillation frequency of a resistance-inductance RL circuit in the carbon monoxide sensor in a scene without calibration gas within a second calibration time in real time.
And the calibration storage unit is used for acquiring the peak average value and the cycle average value of the oscillation peaks of the calibration number in the first calibration time when the second calibration oscillation frequency is zero, determining the peak average value as the calibration peak value and then storing the calibration peak value, and determining the cycle average value as the calibration cycle value and then storing the calibration peak value and the cycle average value.
In an embodiment of the present invention, the monitoring unit includes:
and the acquisition subunit is used for carrying out current sampling on the voltages at the two ends of the RL circuit and acquiring a current sampling voltage value.
And the trough determining subunit is used for updating the current sampling curve trend into an ascending trend when the voltage difference between the current sampling voltage value and the previous sampling voltage value is a positive value and the absolute value of the voltage difference is larger than a first set value and the current sampling curve trend corresponding to the current sampling point is a descending trend, determining the previous sampling voltage value as the currently oscillating trough value and then storing the current sampling voltage value and the previous sampling time as the currently oscillating trough time.
And the candidate wave crest determining subunit is used for updating the trend of the current sampling curve into a descending trend, determining the previous sampling voltage value as a candidate wave crest value of the current oscillation and determining the previous sampling time as the candidate wave crest time corresponding to the current oscillation wave crest when the voltage difference value between the current sampling voltage value and the previous sampling voltage value is a negative value, the absolute value of the voltage difference value is greater than a second set value and the trend of the current sampling curve corresponding to the current sampling point is an ascending trend.
And the oscillation determining subunit is configured to, when a difference between the candidate peak time and a trough time corresponding to a trough of a previous oscillation is greater than a first set time, a difference between the current sampling time and the candidate peak time is less than a second set time, and a voltage difference between the candidate peak value and a trough value corresponding to a trough of the previous oscillation is greater than a set voltage difference, increase the number of oscillations within the first set time by one time, determine the candidate peak value as a peak value of the current oscillation and store the determined peak value, and determine the candidate peak time as a peak time corresponding to a peak of the current oscillation and store the determined peak time.
In an embodiment of the present invention, the apparatus further includes:
and the calling unit is used for continuing calling the monitoring unit when the increased alarm duration is less than the second set time.
And the clearing unit is used for clearing the alarm duration time when the average wave peak value is smaller than the stored calibration peak value or when the average period value is larger than the stored calibration period value.
It can be seen that, in this embodiment, the oscillation frequency of the RL circuit in the CO sensor, the average period value between the oscillation peaks, and the average crest value of the oscillation peaks are determined within a certain time, and then when the oscillation frequency, the average period value, and the average crest value respectively satisfy the corresponding alarm conditions, the CO alarm can be directly performed, so that complex integral calculation is not required, the occupation of resources is reduced, and the efficiency of the CO alarm is improved.
In an embodiment of the present invention, a carbon monoxide sensor alarm device is provided, where the device is used in a terminal, and the device includes:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
in an application environment, monitoring the oscillation frequency of a resistance-inductance RL circuit in the carbon monoxide sensor within a first set time in real time;
when the oscillation times are larger than the set times, acquiring the average period value among the oscillation wave crests of the set number within the first set time and the average wave crest value of the oscillation wave crests of the set number;
when the average period value is smaller than or equal to the stored calibration period value corresponding to the carbon monoxide sensor and the average wave peak value is larger than or equal to the stored calibration peak value corresponding to the carbon monoxide sensor, increasing the alarm duration by a set value;
and when the increased alarm duration time is greater than or equal to a second set time, controlling the carbon monoxide sensor to alarm.
An embodiment of the present invention provides a computer-readable storage medium, on which computer instructions are stored, wherein the instructions, when executed by a processor, implement the steps of the above-mentioned method.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It is to be understood that the present invention is not limited to the procedures and structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (10)
1. A method of carbon monoxide sensor alarm, comprising:
in an application environment, monitoring the oscillation times of a resistance-inductance RL circuit in a carbon monoxide sensor in real time within a first set time;
when the oscillation times are larger than the set times, acquiring the average period value among the oscillation wave crests of the set number in the first set time and the average wave crest value of the oscillation wave crests of the set number;
when the average period value is less than or equal to the stored calibration period value corresponding to the carbon monoxide sensor and the average wave crest value is greater than or equal to the stored calibration peak value corresponding to the carbon monoxide sensor, increasing the alarm duration by a set value;
and when the increased alarm duration time is greater than or equal to a second set time, controlling the carbon monoxide sensor to alarm.
2. The method as claimed in claim 1, wherein before the step of monitoring in real time the number of oscillations of the resistor-inductor RL circuit in the carbon monoxide sensor within the first predetermined time period, the method comprises:
in a calibration scene, monitoring the first calibration oscillation frequency of a resistor-inductor RL circuit in a carbon monoxide sensor within a first calibration time in real time;
when the first calibration oscillation frequency is larger than the calibration frequency, removing the calibration gas in the calibration scene, and monitoring the second calibration oscillation frequency of a resistor-inductor RL circuit in the carbon monoxide sensor in a scene without the calibration gas within a second calibration time in real time;
when the second calibration oscillation frequency is zero, obtaining the peak average value and the cycle average value of the oscillation peaks in the calibration number within the first calibration time, determining the peak average value as the calibration peak value and then storing the peak average value, and determining the cycle average value as the calibration cycle value and then storing the calibration peak value and the cycle average value.
3. The method as claimed in claim 1 or 2, wherein the monitoring in real time the number of oscillations of the resistance-inductance RL circuit in the carbon monoxide sensor within the first set time comprises:
carrying out current sampling on voltages at two ends of the RL circuit to obtain a current sampling voltage value;
if the voltage difference value between the current sampling voltage value and the previous sampling voltage value is a positive value, the absolute value of the voltage difference value is larger than a first set value, and the trend of the current sampling curve corresponding to the current sampling point is a descending trend, the trend of the current sampling curve is updated to be an ascending trend, the previous sampling voltage value is determined as the current oscillating wave trough value and then stored, and the previous sampling time is determined as the wave trough time corresponding to the current oscillating wave trough and then stored;
when the voltage difference value between the current sampling voltage value and the previous sampling voltage value is a negative value, the absolute value of the voltage difference value is larger than a second set value, and the current sampling curve trend corresponding to the current sampling point is an ascending trend, updating the current sampling curve trend to a descending trend, determining the previous sampling voltage value as a candidate wave peak value of the current oscillation, and determining the previous sampling time as a candidate wave peak time corresponding to the wave peak of the current oscillation;
when the difference between the candidate peak time and the trough time corresponding to the trough of the previous oscillation is greater than a first set time, the difference between the current sampling time and the candidate peak time is less than a second set time, and the voltage difference between the candidate peak value and the trough value corresponding to the trough of the previous oscillation is greater than a set voltage difference, increasing the oscillation frequency within the first set time once, determining the candidate peak value as the peak value of the current oscillation and then storing the candidate peak time, and determining the candidate peak time as the peak time corresponding to the peak of the current oscillation and then storing the candidate peak time.
4. The method of claim 1, wherein the method further comprises:
when the increased alarm duration time is less than a second set time, continuing to monitor the oscillation times of a resistance-inductance RL circuit in the carbon monoxide sensor in real time within the first set time;
and when the average wave peak value is smaller than the stored calibration peak value or when the average period value is larger than the stored calibration period value, clearing the alarm duration time.
5. A carbon monoxide sensor alarm device, comprising:
the monitoring unit is used for monitoring the oscillation times of a resistor-inductor RL circuit in the carbon monoxide sensor in real time within a first set time in an application environment;
the acquiring unit is used for acquiring the average period value among the oscillation wave crests with the set number in the first set time and the average wave crest value of the oscillation wave crests with the set number when the oscillation frequency is greater than the set frequency;
the updating unit is used for increasing the alarm duration by a set value when the average period value is less than or equal to the stored calibration period value corresponding to the carbon monoxide sensor and the average crest value is greater than or equal to the stored calibration crest value corresponding to the carbon monoxide sensor;
and the alarm unit is used for controlling the carbon monoxide sensor to alarm when the increased alarm duration is greater than or equal to a second set time.
6. The apparatus of claim 5, wherein the apparatus further comprises:
the first calibration monitoring unit is used for monitoring the first calibration oscillation times of a resistor-inductor RL circuit in the carbon monoxide sensor in real time within a first calibration time in a calibration scene;
the second calibration monitoring unit is used for removing calibration gas in the calibration scene when the first calibration oscillation frequency is greater than the calibration frequency, and monitoring the second calibration oscillation frequency of a resistor-inductor RL circuit in the carbon monoxide sensor in a scene without calibration gas within a second calibration time in real time;
and the calibration storage unit is used for acquiring the peak average value and the cycle average value of the oscillation peaks of the calibrated number in the first calibration time when the second calibration oscillation frequency is zero, determining the peak average value as the calibration peak value and then storing the peak average value, and determining the cycle average value as the calibration cycle value and then storing the calibration cycle value.
7. The apparatus of claim 5 or 6, wherein the monitoring unit comprises:
the acquisition subunit is used for carrying out current sampling on the voltages at two ends of the RL circuit and acquiring a current sampling voltage value;
a trough determining subunit, configured to update a current sampling curve trend to an ascending trend if a voltage difference between the current sampling voltage value and a previous sampling voltage value is a positive value, an absolute value of the voltage difference is greater than a first set value, and a current sampling curve trend corresponding to the current sampling point is a descending trend, determine the previous sampling voltage value as a currently oscillating trough value, and store the previous sampling time as a trough time corresponding to the currently oscillating trough;
a candidate peak determining subunit, configured to update a trend of the current sampling curve to a descending trend, determine the previous sampling voltage value as a candidate peak value of the current oscillation, and determine a previous sampling time as a candidate peak time corresponding to the peak of the current oscillation, when a voltage difference value between the current sampling voltage value and the previous sampling voltage value is a negative value, an absolute value of the voltage difference value is greater than a second set value, and a trend of the current sampling curve corresponding to the current sampling point is an ascending trend;
and the oscillation determining subunit is configured to, when a difference between the candidate peak time and the trough time corresponding to a trough of a previous oscillation is greater than a first set time, a difference between the current sampling time and the candidate peak time is less than a second set time, and a voltage difference between the candidate peak value and the trough value corresponding to a trough of the previous oscillation is greater than a set voltage difference, increase the number of oscillations within the first set time by one time, determine the candidate peak value as the peak value of the current oscillation, and store the candidate peak time as the peak time corresponding to the peak of the current oscillation.
8. The apparatus of claim 5, wherein the apparatus further comprises:
the calling unit is used for continuing calling the monitoring unit when the increased alarm duration is less than a second set time;
and the clearing unit is used for clearing the alarm duration time when the average crest value is smaller than the stored calibration crest value or when the average period value is larger than the stored calibration period value.
9. A carbon monoxide sensor alarm device, which is used for a terminal, and is characterized by comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
in an application environment, monitoring the oscillation frequency of a resistance-inductance RL circuit in the carbon monoxide sensor within a first set time in real time;
when the oscillation times are larger than the set times, acquiring the average period value among the oscillation wave crests of the set number within the first set time and the average wave crest value of the oscillation wave crests of the set number;
when the average period value is smaller than or equal to the stored calibration period value corresponding to the carbon monoxide sensor and the average wave peak value is larger than or equal to the stored calibration peak value corresponding to the carbon monoxide sensor, increasing the alarm duration by a set value;
and when the increased alarm duration time is greater than or equal to a second set time, controlling the carbon monoxide sensor to alarm.
10. A computer-readable storage medium having stored thereon computer instructions, which, when executed by a processor, perform the steps of the method of claims 1-4.
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