CN111724575A - Capacitive overflow detection alarm method - Google Patents
Capacitive overflow detection alarm method Download PDFInfo
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- CN111724575A CN111724575A CN202010732153.0A CN202010732153A CN111724575A CN 111724575 A CN111724575 A CN 111724575A CN 202010732153 A CN202010732153 A CN 202010732153A CN 111724575 A CN111724575 A CN 111724575A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/008—Alarm setting and unsetting, i.e. arming or disarming of the security system
Abstract
The invention discloses a capacitance type overflow detection alarm method, wherein an overflow detection alarm process comprises the following steps: 11) acquiring a capacitance value detected by the equipment, comparing the capacitance value with a set reference value, and if a first preset condition is met, executing the step 12): outputting an overflow alarm signal; the setting mode of the reference value is as follows: setting a capacitance value initially detected by the equipment as a reference value, then judging whether an overflow alarm signal is generated every first preset time, and if not, correcting the reference value according to the capacitance value currently detected by the equipment; or, the setting mode of the reference value is as follows: setting the capacitance value initially detected by the equipment as a reference value, then judging whether the set delay time is reached or not when an overflow alarm signal is generated each time, and if so, correcting the reference value according to the capacitance value currently detected by the equipment. The reference value of the invention adopts a finite self-adaptive mode or a mode of prolonging self-adaptive time, and can avoid the phenomena of false alarm and false alarm cancellation.
Description
Technical Field
The invention relates to a capacitive overflow detection alarm method.
Background
The existing overflow detection mode comprises an electrode detection mode and a capacitance detection mode, wherein the electrode detection mode is as follows: any two electrodes contact liquid to form a loop, namely water is judged to exist, but the electrodes are exposed, and the problems of water leakage, corrosion, scale deposit and the like exist after long-term use. The capacitive detection mode is as follows: and calculating an external capacitance value (namely the capacitance value of the environment where the equipment is located), if the external capacitance value exceeds a preset threshold value, judging that water exists, and adopting a capacitance detection mode to seal the whole equipment, so that the environmental influence resistance is good. At present, the capacitive detection method includes the following two implementation forms: (1) a fixed preset threshold is used as a judgment reference, however, the method cannot be applied to all external environments, if the capacitance value of the external environment is still larger than the preset threshold under the condition of no overflow, the device can give a false alarm (if the capacitance value of the external environment is too high due to a high-temperature and high-humidity environment); (2) and (3) adopting a self-adaptive threshold mode, namely, the judgment reference value can be self-adaptively changed along with the environmental capacitance value, and when the external capacitance exceeds the external capacitance value in the previous stable time period by a preset capacitance change threshold value, judging that water exists. Because the chip of equipment can uninterruptedly carry out the self-adaptation, if equipment soaks in aqueous for a long time, the external capacitance value of stable time period capacitance value adaptation for this moment gradually is, and external capacitance value equals the capacitance value of stable time period this moment, and equipment can relieve the warning, but in reality equipment still is in aqueous, and equipment has sent wrong information. Therefore, the above two capacitive detection methods are not applicable.
Disclosure of Invention
The invention provides a capacitive overflow detection alarm method capable of avoiding false alarm and false alarm cancellation aiming at the technical problems in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a capacitive overflow detection alarm method is used for capacitive overflow detection alarm equipment and comprises an overflow detection alarm process, wherein the overflow detection alarm process comprises the following steps:
11) acquiring a capacitance value detected by equipment, comparing the capacitance value with a set reference value, and executing the step 12) if a first preset condition is met;
12) outputting an overflow alarm signal;
the setting mode of the reference value is as follows: setting a capacitance value initially detected by the equipment as a reference value, then judging whether an overflow alarm signal is generated every first preset time, and if not, correcting the reference value according to the capacitance value currently detected by the equipment; alternatively, the first and second electrodes may be,
the setting mode of the reference value is as follows: setting the capacitance value initially detected by the equipment as a reference value, then judging whether the set delay time is reached or not when an overflow alarm signal is generated each time, and if so, correcting the reference value according to the capacitance value currently detected by the equipment.
Further, the step 12) is followed by the steps of:
13) acquiring a capacitance value detected by the equipment, comparing the capacitance value with a set reference value, and executing step 14 if a second preset condition is met);
14) and releasing the alarm.
Further, the step 11) is preceded by the steps of:
11') the device enters a sleep mode;
11 ') determining whether the chronograph time is greater than or equal to a second preset time, if so, performing said step 11), otherwise returning to step 11');
in the step 11), if the first preset condition is not met, executing a step 11').
Further, the following steps are included between step 12 and step 13:
12') the device enters a sleep mode;
12 ') determining whether the counted time is greater than or equal to a second preset time or a third preset time, if so, performing said step 13), otherwise returning to step 12');
in the step 13), if the second preset condition is not met, executing a step 12'); the step 12) further comprises: and reporting the overflow alarm signal to the APP, judging whether the report is successful, if so, executing the step 12'), and otherwise, repeatedly executing the step 12).
Further, the step 14) further comprises: and reporting the alarm releasing signal to the APP, if the alarm releasing signal is judged to be reported successfully, executing the step 11' if the alarm releasing signal is judged to be reported successfully, and otherwise, repeatedly executing the step 14).
Further, the first preset condition is as follows: and continuously acquiring the capacitance value for at least one time, wherein the difference between the continuously acquired capacitance value and the reference value is greater than or equal to the preset value.
Further, the second preset condition is that: and continuously acquiring the capacitance value for at least one time, wherein the difference value between the capacitance value and the set reference value is smaller than the preset value, or the difference value between the capacitance value and the set reference value is smaller than the preset value.
Further, the device is powered by a battery, and further comprises a low-power alarm process, wherein the low-power alarm process comprises the following steps:
21) the device enters a sleep mode;
22) judging whether the timing time is greater than or equal to a fourth preset time, if so, executing a step 22), and otherwise, returning to the step 21);
23) judging whether the electric quantity of the battery is too low, if so, executing a step 24), and if not, directly reporting the current electric quantity;
24) and outputting a low-power alarm signal.
Further, the step 24) further comprises: reporting a low-power alarm signal to the APP, and judging whether the report is successful, if so, returning to the step 21), otherwise, executing the step 25), wherein the step 25) comprises the following steps: judging whether the timing time is greater than or equal to a fifth preset time, if so, returning to the step 34), otherwise, returning to the step 31); the fourth preset time is equal to the first preset time.
Furthermore, the device is provided with an ad hoc network module, and the capacitance value initially detected by the device is the capacitance value detected after the device completes the network distribution and the specified timing time is reached.
Compared with the prior art, the invention has the following beneficial effects:
1. the setting mode of the reference value of the invention is as follows: setting a capacitance value initially detected by the equipment as a reference value, then judging whether an overflow alarm signal is generated every first preset time, and if not, correcting the reference value according to the capacitance value currently detected by the equipment; or, the setting mode of the reference value is as follows: the capacitance value initially detected by the equipment is set as a reference value, then whether the set delay time is reached is judged when an overflow alarm signal is generated each time, if yes, the reference value is corrected according to the capacitance value currently detected by the equipment, therefore, the reference value of the invention adopts a limited self-adaptive mode or a mode of prolonging the self-adaptive time, and the phenomena of false alarm and false alarm release can be avoided.
2. The invention can automatically enter the sleep mode to operate in a low power consumption state when in a normal operation state and/or when information reporting is not needed, thereby realizing low power consumption design and leading the equipment to be more energy-saving and power-saving.
3. The invention also comprises a low-power alarm flow, which can alarm the low power and avoid the situation that the normal overflow detection alarm cannot be carried out due to the over-low power.
4. The equipment is provided with the self-networking module, so that the equipment and the gateway are combined into a whole, the equipment can be used independently and can be used along with the equipment without the need of matching the gateway.
The invention is further explained in detail with the accompanying drawings and the embodiments; however, the capacitive overflow detection alarm method of the present invention is not limited to the embodiment.
Drawings
FIG. 1 is a schematic overall flow chart of an overflow detection alarm according to an embodiment of the present invention;
FIG. 2 is a flow chart illustrating an adaptive process of reference values according to an embodiment of the present invention;
FIG. 3 is a flow diagram illustrating a low battery alarm in accordance with an embodiment of the present invention;
FIG. 4 is a flow chart illustrating an adaptive process of reference values according to a second embodiment of the present invention.
Detailed Description
In a first embodiment, referring to fig. 1 to fig. 3, a capacitive overflow detection alarm method according to the present invention is used for a capacitive overflow detection alarm device, and includes an overflow detection alarm process, where the overflow detection alarm process includes the following steps:
11) acquiring a capacitance value detected by equipment, comparing the capacitance value with a set reference value, and executing the step 12) if a first preset condition is met;
12) outputting an overflow alarm signal;
the setting mode of the reference value is as follows: setting the capacitance value initially detected by the equipment as a reference value, then judging whether an overflow alarm signal is generated every first preset time, if not, correcting the reference value according to the capacitance value currently detected by the equipment, otherwise, not correcting the reference value.
In this embodiment, the step 12) includes the following steps:
13) acquiring a capacitance value detected by the equipment, comparing the capacitance value with a set reference value, and executing step 14 if a second preset condition is met);
14) and releasing the alarm.
In this embodiment, the step 11) includes the following steps before:
11') the device enters a sleep mode;
11 ') determining whether the chronograph time is greater than or equal to a second preset time, if so, performing said step 11), otherwise returning to step 11');
in the step 11), if the first preset condition is not met, executing a step 11').
In this embodiment, the following steps are included between step 12 and step 13:
12') the device enters a sleep mode;
12 ') determining whether the counted time is greater than or equal to a second preset time or a third preset time, if so, performing said step 13), otherwise returning to step 12');
in the step 13), if the second preset condition is not met, executing a step 12'); the step 12) further comprises: and reporting the overflow alarm signal to the APP, judging whether the report is successful, if so, executing the step 12'), and otherwise, repeatedly executing the step 12). The APP is an overflow alarm application program on a computer or an intelligent mobile terminal (such as a smart phone), and the following steps are carried out.
In this embodiment, the step 14) further includes: and reporting the alarm releasing signal to the APP, if the alarm releasing signal is judged to be reported successfully, executing the step 11' if the alarm releasing signal is judged to be reported successfully, and otherwise, repeatedly executing the step 14).
In this embodiment, the first preset condition is: the difference between the capacitance value and the set reference value is greater than or equal to the preset value, or the difference between the capacitance value and the set reference value is greater than or equal to the preset value, and the capacitance value is continuously obtained at least once (specifically, 49 times, but not limited thereto), and the differences between the capacitance value and the reference value which are continuously obtained are greater than or equal to the preset value.
In this embodiment, the second preset condition is: the difference between the capacitance value and the set reference value is smaller than the preset value, or the difference between the capacitance value and the set reference value is smaller than the preset value, and the capacitance value is continuously obtained at least once (specifically, 49 times, but not limited thereto), and the differences between the capacitance value and the reference value which are continuously obtained are smaller than the preset value.
In this embodiment, the second preset time is 8s, and the preset value is 50, but not limited thereto.
The invention discloses a capacitance type overflow detection alarm method, the detailed overflow detection alarm process of which is shown in figure 1, and the method comprises the following steps:
s1, starting;
s2, the device enters a sleep mode;
s3, judging whether the timing time is more than 8S, if so, executing a step S4, otherwise, returning to the step S2;
s4, reading the current external capacitance (i.e. the capacitance of the environment where the device is located) to be set as the value C2;
s5, judging whether the difference value between the C2 and the reference value C1 is greater than or equal to 50, if so, executing a step S6, otherwise, returning to the step S2;
s6, the equipment exits the sleep mode;
s7, reading an external capacitance value C2;
s8, judging whether the difference value between the capacitance value C2 and the reference value C1 is greater than or equal to 50, if so, executing a step S9, otherwise, returning to the step S2;
s9, reading times + 1;
s10, judging whether the reading times is equal to 50, if yes, executing the step S11, otherwise returning to the step S7;
s11, alarming by equipment, and uploading information to the APP;
s12, judging whether the overflow alarm information is reported successfully, if so, executing a step S13, otherwise, returning to the step S11;
s13, the device enters a sleep mode;
s14, judging whether the timing time is more than 8S, if so, executing a step S15, otherwise, returning to the step S13;
s15, reading the current external capacitance value and setting the current external capacitance value as a value C2;
s16, judging whether the difference value between the capacitance value C2 and the reference value C1 is smaller than 50, if so, executing a step S17, otherwise, returning to the step S13;
s17, the equipment exits the sleep mode;
s18, reading an external capacitance value C2;
s19, judging whether the difference value between the capacitance value C2 and the reference value C1 is smaller than 50, if so, executing a step S20, otherwise, returning to the step S13;
s20, reading times + 1;
s21, judging whether the reading times is equal to 50, if yes, executing the step S22, otherwise returning to the step S18;
s22, the equipment releases the alarm and uploads the information to the APP;
and S23, judging whether the report of the alarm release information is successful, if so, returning to the step S2, and otherwise, returning to the step S22.
In this embodiment, the device is provided with an ad hoc network module, and the capacitance value initially detected by the device is a capacitance value detected after the device completes a network distribution and a predetermined time is reached. The prescribed timer time is specifically, but not limited to, 1 minute. The first preset time is 72h, but is not limited thereto. Therefore, the reference value of the present invention adopts a finite adaptive manner, and the detailed flow thereof is shown in fig. 2, which includes the following steps:
a1, start;
a2, reading an external capacitance value after the distribution network finishes 1 minute, and setting the external capacitance value as a reference value C1;
a3, closing the self-adaptive mode by the equipment, namely, the equipment still reads the external capacitance value at the moment but is not used for correcting the reference value C1;
a4, judging whether the timing time is equal to 72h, if yes, executing the step A5, otherwise, returning to the step A3;
a5, judging whether the equipment overflows and gives an alarm, if not, executing the step A6, otherwise, returning to the step A3;
a6, the device reads the current external capacitance value and corrects the reference value C1.
The reference value is corrected in the following way: and adding the currently read capacitance value and the most recently used reference value, and halving to obtain a value as the current reference value. The most recently used reference value is a reference value used before the correction, and may be a capacitance value initially detected by the device (i.e. an external capacitance value read after 1 minute of network distribution), or may be a reference value that has been corrected for the most recent time.
In this embodiment, the device is powered by a battery, and the present invention further includes a low power alarm process, where the low power alarm process includes the following steps:
21) the device enters a sleep mode;
22) judging whether the timing time is greater than or equal to a fourth preset time, if so, executing a step 22), and otherwise, returning to the step 21);
23) judging whether the electric quantity of the battery is too low, if so, executing a step 34), and if not, directly reporting the current electric quantity;
24) and outputting a low-power alarm signal.
In this embodiment, the step 24) further includes: reporting a low-power alarm signal to the APP, and judging whether the report is successful, if so, returning to the step 21), otherwise, executing the step 25), wherein the step 25) comprises the following steps: and judging whether the timing time is greater than or equal to a fifth preset time, if so, returning to the step 24), and otherwise, returning to the step 21). The fourth preset time is equal to the first preset time, and both the fourth preset time and the first preset time are 72 hours, and the fifth preset time is 24 hours, but not limited thereto.
Specifically, a detailed flowchart of the low power alarm process is shown in fig. 3, and includes the following steps:
b1, start;
b2, completing the power-on distribution network by the equipment;
b3, the device enters a sleep mode;
b4, judging whether the timing time is greater than or equal to 72h, if so, executing a step B5, otherwise, returning to the step B3;
b5, judging whether the battery power of the equipment is too low (namely judging whether the battery power is lower than a specified value), if so, executing a step B6, otherwise, executing a step B9;
b6, the equipment alarms in low power and reports information to the APP;
b7, judging whether the low-power alarm information is reported successfully, if so, returning to the step B3, otherwise, executing the step B8;
b8, judging whether the timing time is greater than or equal to 24h, if so, returning to the step B6, otherwise, returning to the step B3;
and B9, the equipment reports the current electric quantity and reports the information to the APP.
The capacitive overflow detection alarm method adopts a finite adaptive mode to adapt to the reference value, can avoid false alarm caused by the fact that the capacitance value of the external environment is still larger than the preset reference value under the condition of no overflow, and can also avoid false alarm release caused by the fact that the reference value is adapted to the external capacitance value at the moment by the equipment after the equipment is soaked in water for a long time. The invention can automatically enter the sleep mode to allow in a low power consumption state when in a normal operation state and/or when information reporting is not needed, thereby realizing the low power consumption design and leading the equipment to be more energy-saving and power-saving. The invention also comprises a low-power alarm process, which can alarm the low power and avoid the condition that the equipment cannot normally detect and alarm the overflow due to the over-low power.
Example two
The capacitive overflow detection alarm method of the invention is different from the first embodiment in that: the setting mode of the reference value is as follows: setting the capacitance value initially detected by the equipment as a reference value, then judging whether the set delay time is reached or not when an overflow alarm signal is generated each time, if so, correcting the reference value according to the capacitance value currently detected by the equipment, and otherwise, not correcting the reference value.
In this embodiment, the delay time is 12 hours, but is not limited thereto. The reference value of the invention adopts a mode of prolonging the self-adaptive time, and can avoid generating an overflow-removing alarm signal too early, thereby avoiding generating false alarm of the overflow-removing information. Meanwhile, the invention can also avoid false alarm caused by the fact that the capacitance value of the external environment is still larger than the preset reference value under the condition of no overflow. Specifically, the extended adaptive process of the reference value of the present invention is shown in fig. 4, and includes the following steps:
d1, start;
d2, reading an external capacitance value after the distribution network finishes 1 minute, and setting the external capacitance value as a reference value C1;
d3, the device turns off the adaptive mode, i.e., the device still reads the external capacitance but is not used to correct the reference value C1;
d4, judging whether an overflow alarm signal is generated, if so, executing the step D5, otherwise, returning to the step D3;
d5, judging whether the timing time is equal to 12 hours, if so, executing a step D6; otherwise, go back to step D3;
d6, obtaining the capacitance value detected by the current equipment, correcting the reference value, and returning to the step D2.
In this embodiment, the reference value is modified as described above, and is not described herein again.
The above embodiments are only used to further illustrate the capacitive overflow detection alarm method of the present invention, but the present invention is not limited to the embodiments, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention fall within the protection scope of the technical solution of the present invention.
Claims (10)
1. A capacitance type overflow detection alarm method is used for capacitance type overflow detection alarm equipment, comprises an overflow detection alarm process and is characterized in that: the overflow detection alarm process comprises the following steps:
11) acquiring a capacitance value detected by equipment, comparing the capacitance value with a set reference value, and executing the step 12) if a first preset condition is met;
12) outputting an overflow alarm signal;
the setting mode of the reference value is as follows: setting a capacitance value initially detected by the equipment as a reference value, then judging whether an overflow alarm signal is generated every first preset time, and if not, correcting the reference value according to the capacitance value currently detected by the equipment; alternatively, the first and second electrodes may be,
the setting mode of the reference value is as follows: setting the capacitance value initially detected by the equipment as a reference value, then judging whether the set delay time is reached or not when an overflow alarm signal is generated each time, and if so, correcting the reference value according to the capacitance value currently detected by the equipment.
2. The capacitive overflow detection alarm method as claimed in claim 1, wherein: said step 12) is followed by the steps of:
13) acquiring a capacitance value detected by the equipment, comparing the capacitance value with a set reference value, and executing step 14 if a second preset condition is met);
14) and releasing the alarm.
3. The capacitive overflow detection alarm method as claimed in claim 2, wherein: the step 11) is preceded by the steps of:
11') the device enters a sleep mode;
11 ') determining whether the chronograph time is greater than or equal to a second preset time, if so, performing said step 11), otherwise returning to step 11');
in the step 11), if the first preset condition is not met, executing a step 11').
4. The capacitive overflow detection alarm method as claimed in claim 2, wherein: the following steps are included between the step 12 and the step 13:
12') the device enters a sleep mode;
12 ') determining whether the counted time is greater than or equal to a second preset time or a third preset time, if so, performing said step 13), otherwise returning to step 12');
in the step 13), if the second preset condition is not met, executing a step 12'); the step 12) further comprises: and reporting the overflow alarm signal to the APP, judging whether the report is successful, if so, executing the step 12'), and otherwise, repeatedly executing the step 12).
5. A capacitive overflow detection alarm method as claimed in claim 3, wherein: the step 14) further comprises: and reporting the alarm releasing signal to the APP, if the alarm releasing signal is judged to be reported successfully, executing the step 11' if the alarm releasing signal is judged to be reported successfully, and otherwise, repeatedly executing the step 14).
6. The capacitive overflow detection alarm method as claimed in claim 1, wherein: the first preset condition is as follows: and continuously acquiring the capacitance value for at least one time, wherein the difference between the continuously acquired capacitance value and the reference value is greater than or equal to the preset value.
7. The capacitive overflow detection alarm method according to claim 2 or 4, wherein: the second preset condition is as follows: and continuously acquiring the capacitance value for at least one time, wherein the difference value between the capacitance value and the set reference value is smaller than the preset value, or the difference value between the capacitance value and the set reference value is smaller than the preset value.
8. The capacitive overflow detection alarm method as claimed in claim 1, wherein: the device is powered by a battery and also comprises a low-power alarm process, and the low-power alarm process comprises the following steps:
21) the device enters a sleep mode;
22) judging whether the timing time is greater than or equal to a fourth preset time, if so, executing a step 22), and otherwise, returning to the step 21);
23) judging whether the electric quantity of the battery is too low, if so, executing a step 24), and if not, directly reporting the current electric quantity;
24) and outputting a low-power alarm signal.
9. The capacitive overflow detection alarm method of claim 8, wherein: the step 24) further comprises: reporting a low-power alarm signal to the APP, and judging whether the report is successful, if so, returning to the step 21), otherwise, executing the step 25), wherein the step 25) comprises the following steps: judging whether the timing time is greater than or equal to a fifth preset time, if so, returning to the step 34), otherwise, returning to the step 31); the fourth preset time is equal to the first preset time.
10. The capacitive overflow detection alarm method as claimed in claim 1, wherein: the device is provided with an ad hoc network module, and the capacitance value initially detected by the device is the capacitance value detected after the device completes the network distribution and the specified timing time is reached.
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| JPH11353564A (en) * | 1998-06-04 | 1999-12-24 | Nohmi Bosai Ltd | Difference type fire alarm system |
| CN102855032A (en) * | 2011-06-27 | 2013-01-02 | 比亚迪股份有限公司 | Baseline updating method and touch device |
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