CN216364894U

CN216364894U - Induction circuit, toilet seat ring and intelligent toilet

Info

Publication number: CN216364894U
Application number: CN202122588648.3U
Authority: CN
Inventors: 彭文松; 林叶; 蔡金俊; 徐国春
Original assignee: Zhejiang Ikahe Sanitary Ware Co ltd
Current assignee: Zhejiang Ikahe Sanitary Ware Co ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-04-26
Anticipated expiration: 2031-10-26

Abstract

The embodiment of the utility model relates to the technical field of intelligent bathrooms and discloses an induction circuit, a toilet seat ring and an intelligent toilet. The sensing circuit includes: heating element, heat-conducting layer and control module group. The heating element is used for generating heat; the heat conducting layer is used for transferring heat generated by the heating element; the control module is electrically connected with the heat conduction layer and used for detecting the capacitance signal change of the heat conduction layer. The toilet seat includes: the seat ring comprises a seat ring body and an induction circuit. The heat conducting layer and the heating element of the induction circuit are arranged inside the seat ring body; the control module of the induction circuit is positioned outside the seat ring body and is electrically connected with the heat conduction layer through a first connecting wire. The intelligent closestool is provided with the closestool seat ring. The utility model has the beneficial effects that: the heat conducting layer has two functions of heating and induction; the heat conducting layer is not required to be pulled out of the installation position, so that the closestool is heated more uniformly; the induction processor is arranged outside the toilet seat ring, thereby avoiding the influence of water vapor and high temperature environment in the toilet seat ring and improving the induction effect.

Description

Induction circuit, toilet seat ring and intelligent toilet

Technical Field

The utility model relates to the technical field of intelligent bathrooms, in particular to an induction circuit, a toilet seat ring and an intelligent toilet.

Background

Sanitary products such as toilets, which are modern furniture, are indispensable to people's daily life. Along with the continuous progress of science and technology, the closestool also tends to the intelligent development direction more and more, has satisfied the higher requirement of user to closestool use comfort level.

The toilet seat of an intelligent toilet is generally provided with a heating function. In winter, the heating function of the toilet seat is particularly important, and the temperature difference between the toilet seat and a human body can be reduced by heating the toilet seat, so that the use comfort of a user is improved.

The logic of a series of intelligent functions of heating, cleaning, drying and the like used by the intelligent closestool is based on that the closestool senses that a user sits and the user sends a function instruction through a remote controller, so in order to sense that the user sits, the traditional method is to arrange a sensing component or a contact type mechanical switch on a seat ring of the intelligent closestool.

However, since the heating control circuit and the induction processor or the mechanical switch must be installed in the toilet seat at the same time, not only the space of the toilet seat is occupied, but also the toilet seat is heated unevenly; and the induction processor or the mechanical switch is arranged in the toilet seat, and the induction processor is easily failed or signals are easily misjudged if the induction processor is exposed in a high-temperature and high-humidity environment for a long time due to the narrow space of the toilet seat.

In addition, because the set position of the induction component or the mechanical switch on the toilet seat is limited, the induction function cannot be normally triggered after a user sits down due to deviation from the set position of the induction component or the mechanical switch, or the induction function cannot be normally triggered due to the fact that a child user cannot sit down to the set position of the child user due to body limitation, and the intelligent toilet cannot be normally used subsequently. Therefore, a circuit which is safe and reliable, can ensure the heating function of the intelligent toilet seat and also can give consideration to the induction function is needed.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide an induction circuit, a toilet seat and an intelligent toilet, which can trigger heating of the toilet seat and installation of an induction processor outside the toilet seat through a human body, in order to solve the problem that the heating circuit in the prior art cannot have both a heating function and an induction function.

In order to solve the above technical problem, one technical solution adopted by the embodiment of the present invention is:

an inductive circuit, comprising: a heating element for generating heat; an electrically conductive heat conductive layer for transferring heat generated by the heating element; the control module group, the control module group with the heat-conducting layer electricity is connected, is used for detecting the capacitance signal of heat-conducting layer changes.

As a further improvement of the above, the control module comprises an induction processor; the induction processor is electrically connected with the heat conduction layer through a first connecting wire, and is used for detecting the capacitance signal change of the heat conduction layer and converting the capacitance signal change into a level signal.

As a further improvement of the above, the control module further comprises a signal processor; the signal processor is electrically connected with the induction processor, and the level signal is input into the signal processor; and the signal processor controls an intelligent closestool starting function program according to the level signal.

As a further improvement of the above, the sensing processor includes a communication interface and a capacitance comparison circuit; the communication interface is electrically connected with the first connecting wire, the capacitance comparison circuit and the signal processor and is used for realizing signal interaction among the heat conduction layer, the induction processor and the signal processor; the capacitance comparison circuit is used for converting the capacitance signal change into the level signal and outputting the level signal to the signal processor through the communication interface.

As a further improvement of the above solution, the capacitance comparison circuit includes a comparator, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a first resistor, a second resistor, and a third resistor; a first pin of the comparator is connected with a first end of the fifth capacitor, a first end of the fourth capacitor and a first end of the third capacitor, and is grounded; the second end of the fifth capacitor is connected with a power supply; a second pin of the comparator is connected with a second end of the fourth capacitor; a third pin of the comparator is connected with a second end of the third capacitor; the first end of the first capacitor and the first end of the third capacitor are connected with the first end of the second capacitor; a second end of the first capacitor is connected with the first resistor and then is connected to a fourth pin of the comparator; a fifth pin of the comparator is connected with a first end of the second resistor, and a second end of the second resistor is connected with a second end of the second capacitor and the signal input end; the signal input end is electrically connected with the communication interface and used for inputting the capacitance signal change to the comparator; a sixth pin of the comparator is connected with a first end of the third resistor and the signal output end, and a second end of the third resistor is connected with a power supply; the signal output end is electrically connected with the communication interface and used for outputting the level signal; and the seventh pin and the eighth pin of the comparator are connected with a power supply.

As a further improvement of the above solution, the sensing processor and the signal processor are relatively independently arranged; the induction processor and the signal processor are electrically connected through a second connecting wire.

As a further improvement of the scheme, the induction processor and the signal processor are integrally arranged on the same circuit board.

In order to solve the above technical problem, another technical solution adopted by the embodiment of the present invention is:

a toilet seat comprising a seat body and an inductive circuit as described above; wherein the heat conductive layer of the inductive circuit and the heating element are disposed inside the seat ring body; the control module of the induction circuit is positioned outside the seat ring body and is electrically connected with the heat conduction layer through the first connecting wire.

As a further improvement of the above, the level signal includes a first level signal and a second level signal; the control module triggers the heating element to operate to generate heat when the first level signal is detected; and stopping the heating element from operating when the second level signal is detected.

an intelligent closestool is provided with the closestool seat ring.

The utility model has the beneficial effects that: the heat conduction layer is fixed in the toilet seat and is electrically connected with the induction processor through the connecting wires, so that the heat conduction layer has the functions of heating and induction simultaneously, and the induction processor can be installed outside the toilet seat.

By installing the induction processor outside the toilet seat, installation devices on the inner side surface of the toilet seat can be reduced, and the installation space is saved; in addition, the installation area of the induction processor does not need to be pulled out of the heat conduction layer, namely, the complete heat conduction layer is used for heating the toilet seat, so that the heating uniformity of the toilet seat is improved; more importantly, the induction processor can be prevented from being in a high-temperature and high-humidity environment with a narrow space in the toilet seat for a long time, so that the service life of the induction processor is prolonged, and the signal response accuracy is improved.

Drawings

One or more embodiments are illustrated in drawings corresponding to, and not limiting to, the embodiments, in which elements having the same reference number designation may be represented as similar elements, unless specifically noted, the drawings in the figures are not to scale.

FIG. 1 is a schematic diagram of an inductive circuit for a toilet seat provided by an embodiment of the present invention;

FIG. 2 is a schematic diagram of a communication interface provided by an embodiment of the present invention;

FIG. 3 is a schematic diagram of a capacitance comparison circuit provided by an embodiment of the utility model;

fig. 4 is an intelligent toilet provided by the embodiment of the utility model.

Detailed Description

In order to facilitate an understanding of the utility model, the utility model is described in more detail below with reference to the accompanying drawings and specific examples. It is noted that when an element is referred to as being "secured to"/"mounted to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. As used in this specification, the terms "upper," "lower," "inner," "outer," "vertical," "horizontal," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the utility model and simplicity in description, and do not indicate or imply that the referenced devices or elements must be in a particular orientation, constructed and operated in a particular orientation, and are not to be considered limiting of the utility model. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Furthermore, the technical features mentioned in the different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other.

Referring to fig. 1, an induction circuit of an intelligent toilet includes: a heating element 10, a heat conductive layer 20 and a control module 30.

The heating element 10 is fixed to the heat conductive layer 20 for generating heat.

A heat conductive layer 20 is provided on the inside of the toilet seat 40, the heat conductive layer 20 serving to transfer heat generated by the heating element 10.

The inner side of the toilet seat 40 refers to the back side of the surface of the toilet seat 40 where a human body contacts the toilet seat 40 when the human body sits on the toilet seat 40 for defecation.

In the present embodiment, the heat conductive layer 20 is a material having an electrical conductivity, and the material of the heat conductive layer 20 may specifically be a metal material, such as silver, copper, and aluminum, or a non-metal material, such as electrically conductive ceramic, graphite, or the like.

The heat conducting layer 20, the toilet seat 40 and the human body form an inductive capacitor, the capacitance of which changes when the human body approaches or touches the toilet seat 40, i.e. the heat conducting layer 20 simultaneously acts as an inductor in the inductive circuit.

For convenience of explanation and understanding of the technical solution of the present application, hereinafter, the capacitance signal change of the sensing capacitor may also be referred to as "capacitance signal change of the heat conduction layer 20", and the capacitance value of the sensing capacitor may also be referred to as "capacitance value of the heat conduction layer 20".

The control module 30 is electrically connected to the heat conductive layer 20 and is configured to detect a capacitance signal change of the heat conductive layer 20.

Specifically, the control module 30 includes an induction processor 31 and a signal processor 32.

The heat conductive layer 20 and the induction processor 31 are two separate devices, the induction processor 31 being mounted outside the toilet seat 40.

An input/output terminal 50 is disposed on the heat conductive layer 20, and the input/output terminal 50 can be electrically connected to any position on the heat conductive layer 20.

The heat conducting layer 20 and the induction processor 31 are electrically connected through the first connecting wire 60.

One end of the first connecting wire 60 is electrically connected to the input/output terminal 50, and the other end is electrically connected to the sensing processor 31.

The sensing processor 31 can detect the capacitance signal change of the heat conductive layer 20 through the first connection wire 60 and convert the capacitance signal change into a level signal.

The level signal includes a first level signal and a second level signal. The first level signal can be a high level digital signal, and correspondingly, the second level signal is a low level digital signal; the first level signal may be a low level digital signal, and accordingly, the second level signal is a high level digital signal.

The signal processor 32 is electrically connected to the induction processor 31. Through the electrical connection, the level signal of the sensing processor 31 can be inputted to the signal processor 32, and the signal processor 32 controls the intelligent toilet start function program according to the level signal.

Further, the sensing processor 31 includes a communication interface 311 and a capacitance comparison circuit 312.

The communication interface 311 is electrically connected to the first connecting wire 60, the signal processor 32 and the capacitance comparison circuit 312, and is used for realizing signal interaction among the heat conducting layer 20, the induction processor 31 (the communication interface 311 and the capacitance comparison circuit 312) and the signal processor 32.

The capacitance comparison circuit 312 converts the capacitance signal change of the heat conductive layer 20 into a level signal, and then outputs the level signal to the signal processor 32 through the communication interface 311.

Specifically, the communication interface 311 is provided with a first pin G, a second pin V, a third pin O, and a fourth pin S; the capacitance comparison circuit 312 is provided with a signal input terminal and a signal output terminal; the signal processor 32 is provided with a signal terminal and a power supply terminal.

The first pin G is grounded; the second pin V is connected to a power supply terminal of the signal processor 32, and the signal processor 32 can supply power to the induction processor 31 through the power supply terminal; one end of the third pin O is connected to the signal output end of the capacitance comparison circuit 312, and the other end is connected to the signal end of the signal processor 32, and the capacitance comparison circuit 312 can output the level signal to the signal processor 32 through the third pin O; one end of the fourth pin S is connected to the first connecting wire 60, and the other end is connected to the signal input end of the capacitance comparison circuit 312, so as to input the capacitance signal change of the heat conducting layer 20.

The capacitance comparison circuit 312 calculates the capacitance of the heat conduction layer 20 by determining the capacitance with the charging and discharging time.

The capacitance comparison circuit 312 includes a comparator U1, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a first resistor R1, a second resistor R2, and a third resistor R3.

The comparator U1 is CS01 and has eight pins. The first pin GND is connected with the first end of the fifth capacitor C5, the first end of the fourth capacitor C4 and the first end of the third capacitor C3, and is grounded, and the second end of the fifth capacitor C5 is connected with a power supply; the second pin CMDD is connected with a second end of the fourth capacitor C4; the third pin CDC is connected to a second terminal of a third capacitor C3; a first end of the first capacitor C1 and a first end of the third capacitor C3 are connected with a first end of the second capacitor C2; a second end of the first capacitor C1 is connected with a first resistor R1 and then is connected to a fourth pin CIN 1; the fifth pin CIN2 is connected to a first end of the second resistor R2, and a second end of the second resistor R2 is connected to a second end of the second capacitor C2 and the signal input end; the signal input end is electrically connected to the fourth pin S of the communication interface 311, and is used for inputting a capacitance signal change to the comparator; the sixth pin OUT1 is connected with the first end of the third resistor R3 and the signal output end, and the second end of the third resistor R3 is connected with the power supply; the signal output end is electrically connected to the third pin O of the communication interface 311, and is configured to output a level signal to the signal processor 32; the seventh pin MD and the eighth pin VDD are connected to a power supply.

In the capacitance comparison circuit 312, the first capacitance C1 is a reference capacitance; the second capacitor C2 is a parameter adjusting capacitor and is used for adjusting the capacitance value of the tested pin; the third capacitor C3 is used to adjust the sensitivity of the capacitance comparison circuit 312; the fourth capacitance C4 is a fixed capacitance that receives the change in the capacitance signal of the first capacitance C1 and the thermally conductive layer 20; the fifth capacitor C5 is a power supply capacitor and is used for supplying power to the comparator U1; the first resistor R1 and the second resistor R2 are used for adjusting the charging and discharging time of the capacitor; the third resistor R3 is a pull-up resistor and is used when outputting a level signal.

When the heat conduction layer 20 is in operation, the capacitance value of the heat conduction layer 20 is changed due to a change in the state of the sensing circuit itself, for example, the instant when the sensing circuit is switched from open to closed, or due to various environmental factors, for example, changes in temperature, humidity, current, voltage, pressure, etc., so that the sensing processor misjudges and outputs an opposite level signal. For example, the level signal that would be expected to be output is a high level digital signal and as a result is a low level digital signal, causing the signal processor 32 to output an opposite response signal to control the intelligent toilet's function.

To avoid this, the influence of various factors on the heat conductive layer 20 can be comprehensively evaluated to adjust the parameter values of some electrical components (the first capacitor C1, the second capacitor C2, the third capacitor C3, the first resistor R1, and the second resistor R2) in the capacitance comparison circuit 312, so as to reduce the sensing sensitivity of the sensing circuit.

In some embodiments, the sensing processor 31 and the signal processor 32 may be two devices provided separately, and the two electrical devices are electrically connected through the second connection wire 70.

One end of the second connection wire 70 is connected to the third pin O, and the other end is connected to the signal terminal of the signal processor 32.

The level signal of the sensing processor is transmitted to the signal processor 32 through the second connection wire 70.

The sensing processor 31 and the signal processor 32 can be separated in different working environments by connecting the sensing processor 31 and the signal processor 32 through the second connecting wire 70.

In other embodiments, the sensing processor 31 and the signal processor 32 can also be integrated on the same circuit board to form a more integrated control module 30, which not only saves the installation space, but also facilitates the installation process.

When a person approaches or touches the toilet seat 40, the sensing processor 31 detects the capacitance change signal of the heat conductive layer 20, and the sensing processor 31 compares the capacitance value of the heat conductive layer 20 after the change with the reference capacitance (the first capacitance C1), and then sends the comparison result to the signal processor 32 in the form of a level signal.

The signal processor 32 controls the intelligent closestool to start or stop a functional program, such as a heating program, a cleaning program, a drying program and the like according to the high-level digital signal or the low-level digital signal.

In some embodiments, the heat conductive layer 20 secured within the toilet seat 40 can be more than one piece, two pieces, three pieces, or even more.

When two or more heat conductive layers 20 are used, two or more of the heat conductive layers 20 may be electrically connected to two or more induction processors, so that the two or more heat conductive layers 20 can simultaneously serve as induction layers.

The heat conducting layers 20, which simultaneously serve as inductive layers, are distributed at different positions on the toilet seat 40, so that the heat conducting layers 20 are located as far as possible within the human body sitting range on the toilet seat 40. When someone uses the toilet seat 40, if only one of the heat conduction layers 20 senses that a human body approaches or contacts the toilet seat 40, the sensing processor can detect the capacitance change signal of the heat conduction layer 20 and output a level signal to the signal processor 32 to start the function program of the intelligent toilet, so that the possibility that the human body can not trigger the sensing circuit due to deviation from the heat conduction layer with the sensing function after sitting is reduced.

For example, current intelligent closestool is less because of children's buttock, and children sit back on the closestool seat, and the buttock leads to children to trigger induction circuit well and starts corresponding functional program when using intelligent closestool because of deviating from the fixed position of inductor, and to this kind of condition, some enterprises need additionally to make intelligent closestool seat circle or intelligent closestool that are suitable for children to use when producing intelligent closestool, have increaseed manufacturing cost.

In the embodiment, two or more heat conduction layers 20 are used as the sensing layer at the same time and fixed at different positions of the toilet seat 40, so that the probability that the sensing circuit is triggered to start the corresponding functional program after a human body sits on the toilet seat 40 is improved.

In some embodiments, at least a portion of the thermally conductive layer 20 may be used to act as an inductive layer. The "at least a portion" means: the entire conductive layer 20 can simultaneously function as an inductive layer, the entire conductive layer 20 simultaneously having an inductive function in the inductive circuit; or, the whole heat conduction layer 20 is divided into a plurality of sub heat conduction layers, the number of the sub heat conduction layers and the area size of each sub heat conduction layer are not limited during the division, and whether the shape of each sub heat conduction layer is regular or not is not considered, and one, two or even a plurality of sub heat conduction layers are selected to be used as the induction layer according to the needs of actual conditions, so that the one, two or more sub heat conduction layers have the induction function at the same time.

When one, two or more sub-heat conduction layers are divided from the whole heat conduction layer 20 as the sensing layer, in order to prevent the sub-heat conduction layers used as the sensing layer from being electrically connected with the other sub-heat conduction layers having the heat conduction function, the sub-heat conduction layers can be electrically connected through an insulating medium, such as an insulating tape, an insulating glue, or through a dense oxide film partition on the surface of the heat conduction layer 20. For example, when the heat conductive layer 20 is made of aluminum, the heat conductive layer 20 can be insulated by a dense aluminum oxide film on the surface.

In other embodiments, the heat conductive layer 20 and the inductive layer are two separate devices, the heat conductive layer 20 is fixed inside the toilet seat 40, at least one inductive layer is fixed on the heat conductive layer 20, and the inductive layer is distributed on the heat conductive layer 20 and located in the range of human body sitting on the toilet seat 40.

When there are multiple sensing layers, multiple sensing processors 31, and multiple signal processors 32 in the sensing circuit, the electrical connections between the sensing layers, the sensing processors 31, and the signal processors 32 may be multi-topology, such as a tree-fork topology, a binary topology, a chain topology, a star topology, and so on.

The working process of the induction circuit provided by the utility model is as follows:

when a person approaches or touches the toilet seat 40, the capacitance value of the heat conduction layer 20 (in the case that the heat conduction layer 20 is also used as the inductive layer) or the inductive layer 111 fixed on the heat conduction layer 20 (in the case that the heat conduction layer 20 and the inductive layer are independently arranged) changes, and the change principle of the capacitance value of the heat conduction layer 20 or the inductive layer detected by the inductive processor 31 is as follows: when the user uses the toilet, the human hip contacts the toilet seat 40, and the skin of the human hip, the toilet seat 40 and the heat conductive layer 20 or the inductive layer form an inductive capacitor. The skin of the human body and the heat conducting layer 20 or the inductive layer correspond to two electrodes of an inductive capacitor, and the toilet seat 40 serves as an insulating medium of the inductive capacitor. During the process of the user approaching or touching the toilet seat 40, the capacitance of the heat conductive layer 20 or the inductive layer will become large; when the user leaves the toilet seat 40 after using the toilet, the capacitance of the heat conductive layer 20 or the inductive layer is reduced.

Since the fourth pin S of the communication interface 311 is connected to the first connecting wire 60, the capacitance comparison circuit 312 can collect the capacitance value change signal of the heat conducting layer 20 or the sensing layer, and output a level signal to the signal processor 32 after being processed by the comparator U1.

The signal processor 32 receives the level signal from the sensing processor 31, the signal processor 32 further processes the level signal to obtain a response signal, and the signal processor 32 outputs the response signal to an execution terminal (not shown) to control the intelligent toilet to start or close, lock or unlock some function programs.

The comparator U1 calculates the capacitance of the heat conduction layer 20 or the sensing layer by determining the capacitance with charging and discharging time, and compares the capacitance of the heat conduction layer 20 or the sensing layer with the capacitance of the reference capacitor (the first capacitor C1) to determine whether the level signal output by the sensing processor 31 is a high level digital signal or a low level digital signal.

Specifically, the comparison process is as follows:

when a user does not sit on the toilet seat 40, the capacitance value of the heat conduction layer 20 or the induction layer is small and does not exceed the capacitance value of the reference capacitor, the induction processor 31 outputs a high-level digital signal to the signal processor 32, at this time, the signal processor 32 judges that no one uses the toilet seat 40, when the user sits on the toilet seat 40, the capacitance value of the heat conduction layer 20 or the induction layer 111 becomes large and exceeds the capacitance value of the reference capacitor, the induction processor 31 converts the high-level digital signal output in a normal state into a low-level digital signal, and at this time, the signal processor 32 judges that the toilet seat 40 is used by a person.

The following takes an example of triggering a heating program of the intelligent toilet through the induction circuit to exemplarily describe an induction heating process of the intelligent toilet:

when a user uses the toilet seat 40, the sensing processor 31 detects a capacitance variation signal of the heat conducting layer 20 or the sensing layer, and the capacitance comparison circuit 312 in the sensing processor 31 compares the detected capacitance value of the heat conducting layer 20 or the sensing layer with the reference capacitance to obtain a corresponding level signal, and outputs the level signal to the signal processor 32. If the processed level signal of the induction processor 31 is a low level digital signal, the signal processor 32 outputs a first response signal according to the low level digital signal, the first response signal can close the heating element 10 in a heating circuit to form a loop, so as to indirectly heat the toilet seat 40 through the heat conductive layer 20; if the level signal processed by the sensing processor 31 is a high level digital signal, the signal processor 32 outputs a second response signal according to the high level digital signal, and the second response signal can cause the heating element 10 to be disconnected in the heating circuit, so that the heating element 10 stops heating the toilet seat 40.

When the toilet seat 40 is heated, the commercial power (220V ac) passes through the inside of the heating circuit, and the ac inside the heating element 10 causes the capacitance value of the heat conducting layer 20 or the sensing layer to change, and at this time, the capacitance value of the heat conducting layer 20 or the sensing layer can be kept smaller than that of the reference capacitor by adjusting the capacitance value of the reference capacitor, so that the condition that the heating program is stopped because the sensing processor 31 outputs a low-level digital signal to the signal processor 32 can be prevented.

The present embodiment also provides a toilet seat including: a race body and an inductive circuit as described above.

Wherein the heat conductive layer 20 and the heating element 10 of the induction circuit are arranged inside the seat body.

The control module 30 of the induction circuit is located outside the seat ring body and is electrically connected with the heat conducting layer 20 through a first connecting wire 60.

As shown in fig. 4, the present embodiment further provides an intelligent toilet, which is provided with the above-mentioned sensing circuit.

Compared with the existing method of installing the induction processor inside the toilet seat 40, in the present embodiment, the heat conducting layer 20 is fixed inside the toilet seat and electrically connected to the induction processor 31 through the connecting wires, so that the heat conducting layer 20 has both heating and induction functions, and the induction processor 31 can be installed outside the toilet seat 40.

By installing the induction processor 31 outside the toilet seat 40, installation devices on the inner side surface of the toilet seat 40 can be reduced, and installation space is saved; moreover, the installation area of the induction processor 31 does not need to be pulled out of the heat conduction layer 20, that is, the complete heat conduction layer 20 is used for heating the toilet seat 40, so that the heating uniformity of the toilet seat 40 is improved; more importantly, the induction processor 31 can be prevented from being in a narrow space, high-temperature and high-humidity environment in the toilet seat 40 for a long time, so that the service life of the induction processor 31 and the signal response accuracy are improved.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. An inductive circuit, comprising:

a heating element for generating heat;

an electrically conductive heat conductive layer for transferring heat generated by the heating element;

the control module group, the control module group with the heat-conducting layer electricity is connected, is used for detecting the capacitance signal of heat-conducting layer changes.

2. The sensing circuit of claim 1, wherein the control module comprises a sensing processor;

the induction processor is electrically connected with the heat conduction layer through a first connecting wire, and is used for detecting the capacitance signal change of the heat conduction layer and converting the capacitance signal change into a level signal.

3. The sensing circuit of claim 2, wherein the control module further comprises a signal processor;

the signal processor is electrically connected with the induction processor, and the level signal is input into the signal processor;

and the signal processor controls an intelligent closestool starting function program according to the level signal.

4. The sensing circuit of claim 3, wherein the sensing processor comprises a communication interface and a capacitance comparison circuit;

the communication interface is electrically connected with the first connecting wire, the capacitance comparison circuit and the signal processor and is used for realizing signal interaction among the heat conduction layer, the induction processor and the signal processor;

the capacitance comparison circuit is used for converting the capacitance signal change into the level signal and outputting the level signal to the signal processor through the communication interface.

5. The sensing circuit of claim 4, wherein the capacitance comparison circuit comprises a comparator, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a first resistor, a second resistor, and a third resistor;

a first pin of the comparator is connected with a first end of the fifth capacitor, a first end of the fourth capacitor and a first end of the third capacitor, and is grounded; the second end of the fifth capacitor is connected with a power supply;

a second pin of the comparator is connected with a second end of the fourth capacitor;

a third pin of the comparator is connected with a second end of the third capacitor;

the first end of the first capacitor and the first end of the third capacitor are connected with the first end of the second capacitor; a second end of the first capacitor is connected with the first resistor and then is connected to a fourth pin of the comparator;

a fifth pin of the comparator is connected with a first end of the second resistor, and a second end of the second resistor is connected with a second end of the second capacitor and the signal input end; the signal input end is electrically connected with the communication interface and used for inputting the capacitance signal change to the comparator;

a sixth pin of the comparator is connected with a first end of the third resistor and the signal output end, and a second end of the third resistor is connected with a power supply; the signal output end is electrically connected with the communication interface and used for outputting the level signal;

and the seventh pin and the eighth pin of the comparator are connected with a power supply.

6. The sensing circuit of claim 4, wherein the sensing processor and the signal processor are relatively independent;

the induction processor and the signal processor are electrically connected through a second connecting wire.

7. The inductive circuit of claim 4, wherein said inductive processor is integrally disposed on a same circuit board as said signal processor.

8. A toilet seat, comprising: a race body and an inductive circuit as claimed in any one of claims 1 to 7;

wherein the heat conductive layer of the inductive circuit and the heating element are disposed inside the seat ring body;

the control module of the induction circuit is positioned outside the seat ring body and is electrically connected with the heat conduction layer through the first connecting wire.

9. The toilet seat according to claim 8, wherein the level signal comprises a first level signal and a second level signal;

the control module triggers the heating element to operate to generate heat when the first level signal is detected; and stopping the heating element from operating when the second level signal is detected.

10. An intelligent toilet, characterized in that a toilet seat according to claim 9 is provided.