CN108593045B - Ground overflow detector and related device, system, detection method and valve opening control method - Google Patents
Ground overflow detector and related device, system, detection method and valve opening control method Download PDFInfo
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- CN108593045B CN108593045B CN201810337246.6A CN201810337246A CN108593045B CN 108593045 B CN108593045 B CN 108593045B CN 201810337246 A CN201810337246 A CN 201810337246A CN 108593045 B CN108593045 B CN 108593045B
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- 238000001514 detection method Methods 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000004020 conductor Substances 0.000 claims abstract description 36
- 230000008859 change Effects 0.000 claims abstract description 21
- 238000012806 monitoring device Methods 0.000 claims abstract description 11
- 238000012544 monitoring process Methods 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 9
- 230000008054 signal transmission Effects 0.000 claims description 8
- 230000003247 decreasing effect Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 21
- 230000007423 decrease Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
- G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
- G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
- G01F23/268—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors mounting arrangements of probes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a ground overflow detector, and a related device, system, detection method and valve opening control method. The ground overflow detector comprises a base, a conductor and a capacitance detection unit, wherein the conductor is supported by the base and is suspended at a position with a certain height from the bottom surface of the base; the capacitance detection unit is used for detecting capacitance value change caused by medium change under the conductor, and sending an overflow signal after the capacitance value rises from a reference value to a threshold value or more and lasts for a first period. The ground overflow monitoring device comprises the ground overflow detector and the valve controller, and the ground overflow monitoring system comprises the device, the cloud server and the mobile terminal. By adopting the technical scheme of the invention, the ground overflow detection can be realized, and the automatic valve closing can be further realized when the ground overflow occurs so as to minimize the loss.
Description
Technical Field
The invention relates to the field of field safety water, in particular to a ground overflow detector, and a related device, system, detection method and valve opening control method.
Background
With the surge of life quality improvement and home intellectualization, people are more and more concerned about home safety, wherein water safety is particularly important, because in modern life, people often travel away from home for a period of time, so that if a valve breaks or other reasons cause ground overflow, loss is easily caused to people or property, and even financial rights of other families are damaged. The prior art lacks such a solution to minimize damage in the event of such a situation. For this reason, it is necessary to design a floor overflow detector to detect a floor overflow and further design related means to enable an efficient valve closing in the event of a floor overflow to avoid further losses.
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned drawbacks or problems occurring in the prior art, and providing a ground overflow detector, and related apparatus, system, detection method and valve opening control method, so as to implement detection of ground overflow, and further implement automatic valve closing when ground overflow occurs, so as to minimize loss.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the first technical scheme relates to a ground overflow detector, which comprises a base, a conductor and a capacitance detection unit; the electric conductor is supported by the base and is suspended at a position with a certain height from the bottom surface of the base; the capacitance detection unit is arranged on the base and is electrically connected with the conductor, and is used for detecting capacitance value change caused by medium change below the conductor, and sending an overflow signal after the capacitance value is increased from a reference value to a threshold value or more and is continued for a first period.
On the basis of the first technical scheme, a second technical scheme is also designed, and preferably, the capacitive touch screen further comprises a shell, wherein the shell is in sealing connection with the base and forms a cavity to accommodate the conductor and the capacitive detection unit.
On the basis of the first technical scheme, a third technical scheme is also designed, and preferably, the base comprises a base body and a base support, and the base body and the base support are fixedly connected or integrated; the seat support extends outwards along the periphery of the seat body and is at a certain height from the bottom surface of the seat body so as to support the conductor; the lower surface of the seat support is connected with the seat body through the concave cambered surface.
On the basis of the third technical scheme, a fourth technical scheme is also designed, and preferably, the base also comprises a base end cover; the base body is provided with a mounting hole; the base end cover is detachably connected with the mounting hole in a sealing mode.
On the basis of any one of the first to fourth technical solutions, a fifth technical solution is also designed, and preferably, the electrical conductor includes more than two conductive strips, each conductive strip being arranged at intervals along the circumferential direction of the base and connected with the capacitance detection unit; the capacitance detection unit detects capacitance value changes caused by medium changes below the conductive strips, and sends overflow signals after the capacitance values of the conductive strips are all raised to a threshold value from a reference value and the first period is continued.
On the basis of the fifth technical scheme, a sixth technical scheme is also designed, and preferably, the capacitance detection unit comprises a power supply module, a capacitance detection module and a signal transmission module; the power supply module is used for supplying power to the capacitance detection module and the signal transmission module; the capacitance detection module is used for detecting capacitance value changes of the conductive strips caused by the change of the medium below, and generating overflow signals after the capacitance values are all raised to a threshold value from a reference value and the first period is continued; the signal sending module is used for alarming and/or sending out signals after the capacitance detection module generates overflow signals.
A seventh technical means is also provided in any one of the first to fourth technical means, wherein the capacitance detecting means preferably further transmits the overflow release signal after the capacitance value decreases from the threshold value to the reference value and for a second period.
On the basis of the seventh technical scheme, an eighth technical scheme is also designed, preferably, the electric conductor comprises more than two conductive strips, and each conductive strip is arranged at intervals along the circumferential direction of the base and is connected with the capacitance detection unit; the capacitance detection unit detects capacitance value changes caused by medium changes below the conductive strips, and sends overflow signals after the capacitance values of the conductive strips are all raised to a threshold value from a reference value and the first period is continued.
On the basis of the eighth technical scheme, a ninth technical scheme is also designed, and preferably, the capacitance detection unit comprises a power supply module, a capacitance detection module and a signal transmission module; the power supply module is used for supplying power to the capacitance detection module and the signal transmission module; the capacitance detection module is used for detecting capacitance value changes of the conductive strips caused by the change of the medium below, and generating overflow signals after the capacitance values are all raised to a threshold value by the reference value and the first period is continued; generating an overflow release signal after the capacitance values are reduced to the reference value above the threshold value and the second period is continued; the signal sending module is used for alarming and/or sending signals outwards after the capacitance detection module generates overflow signals or overflow release signals.
A tenth technical means relates to a ground overflow monitoring device comprising a valve controller and the ground overflow detector of any one of the first to sixth technical means; the capacitance detection unit is electrically connected with the valve controller or connected with the valve controller through a wireless signal and sends an overflow signal to the valve controller; the valve controller is used for controlling the valve to be closed after receiving the overflow signal sent by the capacitance detection unit.
An eleventh technical aspect relates to a ground overflow monitoring device comprising a valve controller and the ground overflow detector of any of the seventh to ninth technical aspects; the capacitance detection unit is electrically connected with the valve controller or connected with the valve controller through a wireless signal and sends an overflow signal and an overflow release signal to the valve controller; the valve controller is used for controlling the valve to be closed after receiving the overflow signal sent by the capacitance detection unit.
A twelfth technical aspect relates to a ground overflow monitoring system comprising a cloud server, a mobile terminal and the ground overflow monitoring device according to claim 11, which are connected to each other through the internet; the capacitance detection unit simultaneously sends an overflow signal or an overflow release signal to the valve controller and the cloud server or sends the overflow signal or the overflow release signal to the cloud server through the valve controller; the cloud server is used for forwarding the received overflow signal or the overflow release signal to the mobile terminal and notifying the valve controller after receiving a valve closing instruction or a valve opening instruction sent by the mobile terminal; the mobile terminal is used for displaying the overflow signal or the overflow release signal received from the cloud server, receiving a valve closing instruction or a valve opening instruction input by a user and sending the valve closing instruction or the valve opening instruction to the cloud server; the valve controller is used for controlling the valve to be closed after receiving a valve closing instruction, and is also used for checking whether the last signal received by the valve controller is an overflow signal or not after receiving a valve opening instruction, and if the last signal received by the valve controller is the overflow signal, the valve is kept to be closed; otherwise, the valve is controlled to be opened.
Based on the twelfth technical scheme, a thirteenth technical scheme is further designed, preferably, the mobile terminal is further configured to send a valve state query instruction to the valve controller through the cloud server, and the valve controller is further configured to feed back the valve state to the mobile terminal through the cloud server after receiving the valve state query instruction.
A fourteenth technical means relates to a ground overflow detecting method, wherein whether or not an overflow phenomenon occurs on the ground is judged by detecting a change in capacitance values of a plurality of conductors spaced apart from each other by a certain height from the ground, and the overflow phenomenon is judged only when the capacitance values of all the conductors are artificially set to change.
A fifteenth aspect relates to a valve opening control method, wherein the valve controller controls the valve to open only after receiving a valve opening instruction and confirming that there is no overflow phenomenon on the ground.
From the above description of the present invention, compared with the prior art, the present invention has the following advantages:
1. in the first technical scheme, the electric conductor is supported by the base and is suspended at a position with a certain height from the bottom surface of the base, so that ground overflow water can enter below the electric conductor, and the capacitance detection unit can judge whether overflow water occurs or not by detecting capacitance change caused by dielectric change below the electric conductor. The capacitance detection unit judges that overflow occurs and sends an overflow signal only when the capacitance value is judged to be higher than the threshold value from the reference value and the first period is continued, so that false alarm can be avoided.
2. In the second technical scheme, the shell can provide protection and shielding for the conductor, and the capacitance detection unit is prevented from detecting capacitance value change caused by medium change above the conductor.
3. In the third technical scheme, the lower surface of the seat support is connected with the seat body through the concave cambered surface, so that splash water can slide down along the concave cambered surface, and false alarm caused by residual water is avoided.
4. In the fourth technical scheme, through setting up the base end cover, can change the battery or overhaul.
5. In a fifth aspect, the electrical conductor includes more than two conductive strips and is arranged at intervals along the circumferential direction of the base, so that the purpose of the arrangement is that, since the ground overflow detector is often placed in a bathroom or a kitchen where a faucet is provided, splashing often occurs in the bathroom or the kitchen. If there is only one conductive strip, the water can be misreported once it is under the conductive strip. If a plurality of conductive strips are arranged, and the capacitance value of each conductive strip is correspondingly changed, an overflow signal is sent, so that false alarm caused by splashing water can be avoided to the greatest extent. Because the splashing water is always unidirectional or single-sided, the splashing water is difficult to appear in all directions, and the overflow water is multidirectional and occurs, and the capacitance value of the conducting strip in all directions is changed.
6. In the sixth technical solution, the signal sending module may send the generated overflow signal outwards, and the power module may supply power to the capacitance detecting module and the signal sending module.
7. In a seventh aspect, the ground overflow detector is further capable of detecting whether overflow has been removed.
8. In the tenth and eleventh technical solutions, by providing a valve controller, an overflow signal can be received and the valve can be controlled to be closed, so that the valve can be automatically closed when overflow occurs, thereby reducing overflow loss.
9. In the twelfth technical scheme, a user can know the ground overflow condition through the mobile terminal, and the valve can be remotely controlled to be opened.
10. In a thirteenth aspect, the user may learn about the valve status through the mobile terminal.
11. By the ground overflow detection method according to the fourteenth aspect, false alarms can be avoided.
12. The valve controller controls the valve to be opened only after receiving the valve opening command and confirming that no overflow phenomenon exists on the ground, so that the valve can be prevented from being opened under the condition that overflow exists, and further loss occurs.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments below are briefly introduced, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a perspective view of a floor overflow detector according to an embodiment of the invention;
FIG. 2 is an exploded perspective view of a floor overflow detector according to an embodiment of the invention;
fig. 3 is a cross-sectional view of a ground overflow detector in accordance with an embodiment of the invention.
The main reference numerals illustrate:
a ground overflow detector 100; a housing 1; a first seal ring 2; a second seal ring 3; an electric conductor 4; a first conductive bar 41; a second conductive strip 42; a circuit board 5; a seat support 6; a battery 7; a third seal ring 8; a base end cap 9; a base 10.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are preferred embodiments of the invention and should not be taken as excluding other embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without creative efforts, are within the protection scope of the present invention.
In the claims, specification and drawings hereof, unless explicitly defined otherwise, the terms "first," "second," or "third," etc. are used for distinguishing between different objects and not for describing a particular sequential order.
In the claims, specification and drawings hereof, unless otherwise specifically defined, the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", and "lower" are used for directional terms, such as,
The references to "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", etc., indicate an orientation or a positional relationship based on the orientation and positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation or be constructed and operated in a specific orientation, nor should they be construed as limiting the specific scope of protection of the present invention.
In the claims, specification and drawings of the present invention, unless explicitly defined otherwise, the term "fixedly connected" or "fixedly connected" should be construed broadly, i.e. any connection between them without a displacement relationship or a relative rotation relationship, that is to say includes non-detachably fixedly connected, integrally connected and fixedly connected by other means or elements.
In the claims, specification and drawings of the present invention, the terms "comprising," having, "and variations thereof as used herein, are intended to be" including but not limited to.
Referring to fig. 1 to 3, fig. 1 to 3 illustrate a ground overflow detector 100 in an embodiment of the invention. As shown in fig. 1 to 3, the ground overflow detector 100 includes a base, a housing 1, a conductive body 4, and a capacitance detecting unit.
The base comprises a base body 10, a base 6 and a base end cover 9. The seat body 10 and the seat support 6 are fixedly connected or integrated. The seat 6 extends outwardly along the periphery of the seat and is at a height from the bottom surface of the seat 10. And the lower surface of the seat support 6 is connected with the seat body 10 through the concave cambered surface, so that the splash water can slide down along the concave cambered surface, and false alarm caused by residual water is avoided. The upper surface of the seat support 6 is provided with a support groove for supporting the electric conductor 4. The brackets may or may not be through holes, in which case the brackets are not through holes. In this embodiment, the bottom surface of the bracket is attached to the conductor 4 to define the lowest bottom surface of the conductor 4. The base body 10 is provided with a mounting hole which is a through hole, and the base end cover 9 is in threaded connection with the mounting hole and is sealed by the third sealing ring 8. And the base end cap 9 may be removably sealingly attached in other manners as will be appreciated by those skilled in the art. The base end cover 9 is provided with a straight groove for the screw driver to screw down. The base end cover 9 is provided to facilitate placement or replacement of the battery 7 and also to facilitate maintenance.
The casing 1 is arch-shaped, is clamped with the seat support 6, and is connected with the seat support in a sealing manner through the first sealing ring 2 and the second sealing ring 3, and the specific sealing manner adopts a labyrinth sealing manner in the embodiment. The arrangement of the housing 1 is advantageous for providing protection and shielding for the electrical conductor from capacitance changes caused by changes in the medium above the electrical conductor detected by the capacitance detection unit.
In this embodiment, the electrical conductor 4 comprises two separate conductive strips, namely a first conductive strip 41 and a second conductive strip 42; the two conducting strips are arranged at intervals along the circumferential direction of the base, respectively occupy an angle range close to 180 degrees, and a part of each conducting strip is folded and then placed in the bracket to be attached to the bottom of the bracket. Since the first conductive strip 41 and the second conductive strip 42 are disposed on the seat support 6, they are suspended at a certain height from the bottom surface of the base. The reason that two conductive strips, even more than two conductive strips, are arranged at intervals along the circumferential direction of the base is that the ground overflow detector is often placed in a bathroom or a kitchen provided with a faucet, and splashing water often occurs in the bathroom or the kitchen. If there is only one conductive strip, the water can be misreported once it is under the conductive strip. If a plurality of conductive strips are arranged, and the capacitance value of each conductive strip is correspondingly changed, an overflow signal is sent, so that false alarm caused by splashing water can be avoided to the greatest extent. Because the splashing water is always unidirectional or single-sided, the splashing water is difficult to appear in all directions, and the overflow water is multidirectional and occurs, and the capacitance value of the conducting strip in all directions is changed.
In this embodiment, the capacitance detecting unit is electrically connected to each conductive strip, and is configured to detect a change in capacitance value caused by a change in medium under the conductive body, send an overflow signal after the capacitance value increases from a reference value to a threshold value or more for a first period, and send an overflow release signal after the capacitance value decreases from the threshold value to the reference value for a second period. The capacitive touch screen comprises a power supply module, a capacitive detection module and a signal transmission module. Wherein:
the power supply module comprises a battery 7, which is mainly used for powering the capacitance detection module and the signal transmission module.
The capacitance detection module and the signal transmission module are both arranged on the circuit board 5. The capacitance detection module is used for detecting capacitance value changes of the conductive strips caused by the change of the medium below, and generating overflow signals after the capacitance values are all raised to a threshold value by the reference value and are kept for a first period. This already enables detection of overflows. In this embodiment, the capacitance detection module further generates the overflow release signal after the capacitance values are reduced to the reference value by above the threshold value and for the second period, so that whether the overflow is removed can be detected. Of course, the detection of overflow release by the capacitive detection module is not necessary. Only the detection of overflowed water has enabled the inventive object of this patent. It should be noted that how the capacitance detection module detects and compares the capacitance change belongs to the prior art, and need not be described in detail.
The signal sending module is used for alarming and/or sending signals outwards after the capacitance detection module generates the overflow signal or the overflow release signal. In this embodiment, the signal sending module mainly includes a buzzer alarm and a Zigbee module, where the buzzer is mainly used to send an alarm after the signal sending module receives the overflow signal sent by the capacitance detection module, and the Zigbee module is mainly used to communicate with the outside, and is also used to send the overflow signal and the overflow release signal.
In order to automatically close the valve when overflow occurs so as to reduce overflow loss, a ground overflow monitoring device is also designed in the embodiment. Which includes the above-described surface overflow detector 100 and valve controller. The capacitance detection unit is connected with the valve controller through a Zigbee wireless signal (of course, the capacitance detection unit can also be electrically connected), and an overflow signal and an overflow release signal are sent to the capacitance detection unit; the valve controller is used for controlling the valve to be closed after receiving the overflow signal sent by the capacitance detection unit, wherein the valve refers to a household total valve. Of course, as described above, even if the surface overflow detector 100 can only transmit the overflow signal, the surface overflow monitoring device may be formed together with the valve controller to achieve the object of the present invention.
In this embodiment, the ground overflow monitoring device may be further connected to the cloud server and the mobile terminal through the internet to form a ground overflow monitoring system. In this system:
the capacitance detection unit simultaneously sends an overflow signal or an overflow release signal to the valve controller and the cloud server or sends the overflow signal or the overflow release signal to the cloud server through the valve controller.
The cloud server is used for forwarding the received overflow signal or the overflow release signal to the mobile terminal and notifying the valve controller after receiving a valve closing instruction or a valve opening instruction sent by the mobile terminal.
The mobile terminal is used for displaying an overflow signal or an overflow release signal received from the cloud server, receiving a valve closing instruction or a valve opening instruction input by a user and sending the valve closing instruction or the valve opening instruction to the cloud server, and sending a valve state inquiry instruction to the valve controller through the cloud server; here, the mobile terminal realizes the above functions by a dedicated App installed thereon.
The valve controller is used for controlling the valve to be closed after receiving a valve closing instruction, and is also used for checking whether the last signal received by the valve controller is an overflow signal or not after receiving a valve opening instruction, if the last signal received by the valve controller is the overflow signal, the valve is kept to be closed, otherwise, the valve is controlled to be opened; and the valve controller is also used for feeding back the valve state to the mobile terminal through the cloud server after receiving the valve state query instruction. The valve state is determined by the overflow signal and overflow release signal received by the valve controller. The valve state comprises an overflow state, an overflow release state and a normal state. Here, the overflow state refers to a state in which the valve controller has received the overflow signal and has closed the valve; the overflow release state refers to a state in which the valve controller has received the overflow release signal and is still in a closed valve; the normal state refers to the open valve state. In this embodiment, after receiving the valve opening command, the valve controller checks whether the ground overflows, so that the valve can be prevented from being opened under the condition that the overflow still exists, and further loss occurs.
In this embodiment, the ground overflow detection method may be summarized as that whether the ground overflow phenomenon occurs is determined by detecting the capacitance value changes of a plurality of conductors spaced from each other by a certain height from the ground, and the overflow phenomenon is determined only when the capacitance values of all conductors have artificially set changes. This can avoid false alarms caused by splattering water.
In the ground overflow monitoring system, the valve opening control method used can be summarized as that the valve controller controls the valve to open only after receiving a valve opening command and confirming that the ground has no overflow phenomenon. Of course, the method can be implemented in various ways, that is, whether the last instruction received by the valve controller is an overflow signal or not can be confirmed after the valve opening instruction is received, if not, the valve is controlled to be opened, or a section of instruction can be sequentially executed at intervals, whether the valve opening instruction is received after overflow is confirmed, and only when the valve opening instruction is received while the overflow phenomenon does not exist, the valve opening is executed.
The foregoing description of the embodiments and description is presented to illustrate the scope of the invention, but is not to be construed as limiting the scope of the invention. Modifications, equivalents, and other improvements to the embodiments of the invention or portions of the features disclosed herein, as may occur to persons skilled in the art upon use of the invention or the teachings of the embodiments, are intended to be included within the scope of the invention, as may be desired by persons skilled in the art from a logical analysis, reasoning, or limited testing, in combination with the common general knowledge and/or knowledge of the prior art.
Claims (13)
1. The ground overflow detector is characterized by comprising a base, a conductor and a capacitance detection unit; the electric conductor is supported by the base and is suspended at a position with a certain height from the bottom surface of the base; the capacitance detection unit is arranged on the base and is electrically connected with the electric conductor, the electric conductor comprises more than two conductive strips, and each conductive strip is arranged at intervals along the circumferential direction of the base and is connected with the capacitance detection unit; the capacitance detection unit detects capacitance value changes caused by medium changes below the conductive strips, and sends overflow signals after the capacitance values of the conductive strips are all raised to a threshold value from a reference value and the first period is continued.
2. A floor overflow detector as claimed in claim 1, further comprising a housing sealingly connected to the base and defining a chamber for receiving the electrical conductor and the capacitance detecting unit.
3. The ground overflow detector as claimed in claim 1, wherein the base comprises a base body and a base support, and the base body and the base support are fixedly connected or integrally connected; the seat support extends outwards along the periphery of the seat body and is at a certain height from the bottom surface of the seat body so as to support the conductor; the lower surface of the seat support is connected with the seat body through the concave cambered surface.
4. A floor overflow detector as claimed in claim 3 wherein the base further comprises a base end cap; the base body is provided with a mounting hole; the base end cover is detachably connected with the mounting hole in a sealing mode.
5. The ground overflow detector as claimed in claim 1, wherein the capacitance detecting unit comprises a power module, a capacitance detecting module and a signal transmitting module;
the power supply module is used for supplying power to the capacitance detection module and the signal transmission module;
the capacitance detection module is used for detecting capacitance value changes of the conductive strips caused by the change of the medium below, and generating overflow signals after the capacitance values are all raised to a threshold value from a reference value and the first period is continued;
the signal sending module is used for alarming and/or sending out signals after the capacitance detection module generates overflow signals.
6. A floor overflow detector as claimed in any of claims 1 to 4 wherein the capacitance detection unit also transmits the overflow release signal after the capacitance value has decreased from above the threshold value to the reference value for a second period.
7. The ground overflow detector as claimed in claim 1, wherein the capacitance detecting unit comprises a power module, a capacitance detecting module and a signal transmitting module;
the capacitance detection module is used for detecting capacitance value changes of the conductive strips caused by the change of the medium below, and generating overflow signals after the capacitance values are all raised to a threshold value by the reference value and the first period is continued; generating an overflow release signal after the capacitance values are reduced to the reference value above the threshold value and the second period is continued;
the signal sending module is used for alarming and/or sending signals outwards after the capacitance detection module generates overflow signals or overflow release signals.
8. A floor overflow monitoring device comprising a valve controller and a floor overflow detector as claimed in any of claims 1 to 5; the capacitance detection unit is electrically connected with the valve controller or connected with the valve controller through a wireless signal and sends an overflow signal to the valve controller; the valve controller is used for controlling the valve to be closed after receiving the overflow signal sent by the capacitance detection unit.
9. A floor overflow monitoring device as claimed in claim 8 wherein the valve controller controls the opening of the valve only after receiving a valve opening command and confirming that there is no overflow on the floor.
10. A surface overflow monitoring device comprising a valve controller and a surface overflow detector as claimed in claim 6 or 7; the capacitance detection unit is electrically connected with the valve controller or connected with the valve controller through a wireless signal and sends an overflow signal and an overflow release signal to the valve controller; the valve controller is used for controlling the valve to be closed after receiving the overflow signal sent by the capacitance detection unit.
11. A ground overflow monitoring system, characterized by comprising a cloud server, a mobile terminal and the ground overflow monitoring device as claimed in claim 10, which are connected to each other through the internet;
the capacitance detection unit simultaneously sends an overflow signal or an overflow release signal to the valve controller and the cloud server or sends the overflow signal or the overflow release signal to the cloud server through the valve controller;
the cloud server is used for forwarding the received overflow signal or the overflow release signal to the mobile terminal and notifying the valve controller after receiving a valve closing instruction or a valve opening instruction sent by the mobile terminal;
the mobile terminal is used for displaying the overflow signal or the overflow release signal received from the cloud server, receiving a valve closing instruction or a valve opening instruction input by a user and sending the valve closing instruction or the valve opening instruction to the cloud server;
the valve controller is used for controlling the valve to be closed after receiving a valve closing instruction, and is also used for checking whether the last signal received by the valve controller is an overflow signal or not after receiving a valve opening instruction, and if the last signal received by the valve controller is the overflow signal, the valve is kept to be closed; otherwise, the valve is controlled to be opened.
12. The floor overflow monitoring system of claim 11, wherein the mobile terminal is further configured to send a valve status query command to the valve controller via the cloud server, and wherein the valve controller is further configured to feed back the valve status to the mobile terminal via the cloud server after receiving the valve status query command.
13. A ground overflow detecting method, characterized in that it is based on a ground overflow detector as claimed in any of claims 1-7, comprising the steps of:
the ground overflow phenomenon is judged by detecting the capacitance value change of a plurality of conductors which are spaced from each other and have a certain height from the ground, and the overflow phenomenon is judged only when the capacitance values of all conductors are artificially set to change.
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| CN110274659A (en) * | 2019-06-03 | 2019-09-24 | 九牧厨卫股份有限公司 | A kind of overflow alarming method and overflow water detector |
| CN113590412A (en) * | 2021-06-29 | 2021-11-02 | 无锡小天鹅电器有限公司 | Overflow detection method, system, device, electronic equipment and storage medium |
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