CN213843542U - Intelligent closestool and detection device based on capacitance induction - Google Patents
Intelligent closestool and detection device based on capacitance induction Download PDFInfo
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- CN213843542U CN213843542U CN202023194125.2U CN202023194125U CN213843542U CN 213843542 U CN213843542 U CN 213843542U CN 202023194125 U CN202023194125 U CN 202023194125U CN 213843542 U CN213843542 U CN 213843542U
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Abstract
The utility model discloses an intelligent closestool and detection device based on electric capacity response, detection device includes: the capacitance sensing unit is used for acquiring a capacitance sensing value of a detection area of a detected object; the temperature sensing unit is used for acquiring the temperature of the capacitance sensing unit; the main control board is provided with a capacitance acquisition circuit in signal connection with the capacitance sensing unit, a temperature acquisition circuit in signal connection with the temperature sensing unit and a signal output circuit; the main control board corrects a capacitance induction threshold according to the temperature of the capacitance induction unit collected by the temperature collection circuit, and compares a capacitance induction value collected by the capacitance collection circuit with the corrected capacitance induction threshold to obtain a capacitance induction difference value, and then judges whether an object contacts a detection area of the object to be detected according to the capacitance induction difference value; the signal output circuit is used for outputting the signal of the judgment result. The utility model discloses can effectively avoid the influence of temperature to the testing result of electric capacity response, the reliability is higher, and application scope is wider.
Description
Technical Field
The utility model belongs to the technical field of the detection technique and specifically relates to a detection device based on electric capacity response still relates to an intelligent closestool with detection device based on electric capacity response.
Background
With the popularization of the intelligent toilet, the functions of the intelligent toilet are more and more diversified, and some functions (such as hip washing, bidet washing, drying and the like) need to be controlled by detecting whether a user sits on a seat (i.e. whether the user sits on a seat ring of the toilet). The technical means for identifying whether the user sits on the product of the type on the market usually adopts a sitting sensor for identification, and most of the sitting sensors adopt a capacitance sensor or a gravity sensor. The capacitance sensor is used for identifying whether a person sits or not by sensing the change of capacitance after the person sits on the seat ring. Because the capacitance induction detection method is easily influenced by the temperature of the seat ring, the detection is inaccurate, false triggering exists, or the seat ring cannot be detected, and the seat ring is generally provided with a heating function, so that the temperature of the seat ring can influence the capacitance induction seat ring.
In view of this, the present invention is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a detection device based on electric capacity response still provides an intelligent closestool who has detection device based on electric capacity response, can effectively avoid the influence of temperature to the testing result of electric capacity response through this detection device, and the reliability is higher, reduces the error rate, and application scope is wider.
In order to achieve the above object, according to one of the aspects of the present invention, the present invention adopts the following technical solutions: a capacitive sensing based detection device comprising:
the capacitance sensing unit is used for acquiring a capacitance sensing value of a detection area of a detected object;
the temperature sensing unit is used for acquiring the temperature of the capacitance sensing unit;
the main control board is provided with a capacitance acquisition circuit, a temperature acquisition circuit and a signal output circuit, the capacitance acquisition circuit is in signal connection with the capacitance sensing unit, and the temperature acquisition circuit is in signal connection with the temperature sensing unit;
the main control board corrects a capacitance induction threshold value according to the temperature of the capacitance induction unit collected by the temperature collection circuit, and compares a capacitance induction value collected by the capacitance collection circuit with the corrected capacitance induction threshold value to obtain a capacitance induction difference value, and then judges whether an object contacts a detection area of the object to be detected according to the capacitance induction difference value; the signal output circuit is used for outputting a signal of a judgment result of whether an object contacts the detection area.
Preferably, the capacitance sensing unit comprises a copper foil sensing surface, and the copper foil sensing surface is arranged on a detection area of the object to be detected to detect the capacitance sensing value.
Preferably, the temperature sensing unit employs an NTC temperature sensor to detect the temperature of the capacitance sensing unit.
Preferably, the main control board corrects the capacitance induction threshold value through a preset relational expression between the temperature of the capacitance induction unit and the capacitance induction threshold value; or the main control board corrects the capacitance induction threshold value through a relation between the temperature of the capacitance induction unit and the capacitance induction threshold value obtained through self-learning of a machine.
According to the utility model discloses a further aspect, the utility model provides an intelligent closestool, including above-mentioned arbitrary detection device, electric capacity induction element locates on the seat circle, through detection device detects the seat of seat circle.
Preferably, the temperature sensing unit is arranged on the seat ring, so as to obtain the temperature of the capacitance sensing unit by detecting the temperature of the seat ring.
The utility model has the advantages that:
the utility model discloses a set up the temperature that the temperature-sensing unit acquireed electric capacity induction unit, according to the temperature correction electric capacity induction threshold value of the electric capacity induction unit who acquires, the electric capacity induction value who acquires is compared with the electric capacity induction threshold value after correcting again, obtain the difference of electric capacity response, and then judge the detection area of testee according to the difference of electric capacity response whether have the object contact, can effectively avoid the influence of electric capacity induction unit's temperature to the testing result of electric capacity response like this, the reliability is higher, reduce the error rate, application scope is wider.
Drawings
Fig. 1 is a block diagram of a detection device based on capacitive sensing according to an embodiment of the present invention;
fig. 2 is a block diagram of a main control board according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not limit the scope of the present invention.
Referring to fig. 1 and fig. 2, fig. 1 shows the structure block diagram of the detection device based on capacitance induction according to an embodiment of the present invention, fig. 2 shows the structure block diagram of the main control board according to an embodiment of the present invention, the present invention relates to a detection device 1 based on capacitance induction, including:
the capacitance sensing unit 10 is used for acquiring a capacitance sensing value of a detection area of a detected object;
the temperature sensing unit 20 is used for acquiring the temperature of the capacitance sensing unit;
the main control board 30 is provided with a capacitance acquisition circuit 31, a temperature acquisition circuit 32 and a signal output circuit 33, the capacitance acquisition circuit 31 is in signal connection with the capacitance sensing unit 10, and the temperature acquisition circuit 32 is in signal connection with the temperature sensing unit 20;
the main control board 30 corrects the capacitance sensing threshold according to the temperature of the capacitance sensing unit 10 collected by the temperature collecting circuit 32, and compares the capacitance sensing value collected by the capacitance collecting circuit 31 with the corrected capacitance sensing threshold to obtain a capacitance sensing difference, and then judges whether an object contacts the detection area of the object to be detected according to the capacitance sensing difference; the signal output circuit 33 is configured to output a signal indicating a determination result of whether an object touches the detection area to an external functional unit, so as to control the external functional unit to execute a corresponding command.
Preferably, in this embodiment, the capacitance sensing unit 10 includes a copper foil sensing surface (not shown) disposed on a detection area of the object to be detected for detecting the capacitance sensing value.
Preferably, in the present embodiment, the temperature sensing unit 20 employs an NTC temperature sensor to detect the temperature of the capacitance sensing unit 10, but in other embodiments, other types of temperature sensors, such as a thermocouple temperature sensor, a PTC (positive temperature coefficient) temperature sensor, etc., may be employed.
Preferably, in this embodiment, the main control board 30 corrects the capacitance sensing threshold value through a preset relational expression between the temperature of the capacitance sensing unit 10 and the capacitance sensing threshold value; specifically, a large amount of data of the capacitance sensing threshold corresponding to the temperature of the capacitance sensing unit 10 can be measured through a large amount of experiments, one way may be to analyze the data artificially to obtain a relational expression between the temperature of the capacitance sensing unit 10 and the capacitance sensing threshold, and then write the relational expression into the program of the main control board 30 in advance, and the other way may be to analyze the data through a machine self-learning algorithm to obtain a relational expression between the temperature of the capacitance sensing unit 10 and the capacitance sensing threshold, so that the action of writing the relational expression into the program of the main control board in advance is omitted, and the method is more intelligent and further can correct the capacitance sensing threshold.
Alternatively, the main control board 30 may directly obtain the relation between the temperature of the capacitive sensing unit 10 and the capacitive sensing threshold through machine self-learning to correct the capacitive sensing threshold without setting the relation between the temperature of the capacitive sensing unit 10 and the capacitive sensing threshold in advance. Specifically, the main control board 30 records data of successful control cases according to the previous successful control cases as objects of machine self-learning, and then self-learns the data to obtain a relation between the temperature of the capacitive sensing unit 10 and the capacitive sensing threshold.
According to the utility model discloses a further aspect, the utility model provides an intelligent closestool (not shown), it includes any one of above-mentioned detection device 1, the seat circle is detection device 1 by the side object, electric capacity induction unit 10 is located on the seat circle, through detection device 1 detects the seat circle landing, can effectively avoid the seat circle to receive the influence that detects electric capacity induction landing after the heating, has improved the reliability that the seat was detected greatly, reduces the erroneous judgement rate.
In this embodiment, the temperature sensing unit 20 is disposed on the seat ring to obtain the temperature of the capacitance sensing unit 10 by detecting the temperature of the seat ring.
Of course, the utility model discloses a detection device except being used for detecting intelligent closestool, can also be used to the detection of other products, does not regard this as the limit.
So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.
Claims (6)
1. A detection device based on capacitive sensing, comprising:
the capacitance sensing unit is used for acquiring a capacitance sensing value of a detection area of a detected object;
the temperature sensing unit is used for acquiring the temperature of the capacitance sensing unit;
the main control board is provided with a capacitance acquisition circuit, a temperature acquisition circuit and a signal output circuit, the capacitance acquisition circuit is in signal connection with the capacitance sensing unit, and the temperature acquisition circuit is in signal connection with the temperature sensing unit;
the main control board corrects a capacitance induction threshold value according to the temperature of the capacitance induction unit collected by the temperature collection circuit, and compares a capacitance induction value collected by the capacitance collection circuit with the corrected capacitance induction threshold value to obtain a capacitance induction difference value, and then judges whether an object contacts a detection area of the object to be detected according to the capacitance induction difference value; the signal output circuit is used for outputting a signal of a judgment result of whether an object contacts the detection area.
2. The device according to claim 1, wherein the capacitive sensing unit comprises a copper foil sensing surface, and the copper foil sensing surface is disposed on a detection area of the object to be detected for detecting the capacitive sensing value.
3. The capacitance-sensing based detection device according to claim 1, wherein the temperature sensing unit employs an NTC temperature sensor to detect the temperature of the capacitance sensing unit.
4. The device according to claim 1, wherein the main control board corrects the capacitance sensing threshold value according to a preset relation between the temperature of the capacitance sensing unit and the capacitance sensing threshold value; or the main control board corrects the capacitance induction threshold value through a relation between the temperature of the capacitance induction unit and the capacitance induction threshold value obtained through self-learning of a machine.
5. An intelligent toilet bowl, comprising the detection device of any one of claims 1 to 4, wherein the capacitive sensing unit is disposed on a seat, and the seat sitting on the seat is detected by the detection device.
6. The intelligent closestool of claim 5, wherein the temperature sensing unit is arranged on the seat ring, so that the temperature of the capacitance sensing unit can be obtained by detecting the temperature of the seat ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023194125.2U CN213843542U (en) | 2020-12-25 | 2020-12-25 | Intelligent closestool and detection device based on capacitance induction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023194125.2U CN213843542U (en) | 2020-12-25 | 2020-12-25 | Intelligent closestool and detection device based on capacitance induction |
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| Publication Number | Publication Date |
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| CN213843542U true CN213843542U (en) | 2021-07-30 |
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| CN202023194125.2U Active CN213843542U (en) | 2020-12-25 | 2020-12-25 | Intelligent closestool and detection device based on capacitance induction |
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