Intelligent closestool and micro capacitance type foot kicking sensing device thereof

Abstract

The utility model provides an intelligent closestool and a miniature capacitance type foot kicking induction device thereof, and relates to the technical field of capacitance type induction, the device adopts a double-layer printed circuit board design, the superposed connection is realized through a half-hole process, the module volume is effectively reduced, and the induction capability and the electromagnetic compatibility are enhanced at the same time. A power management unit and a control unit of the device are integrated on one PCB, and a copper foil layer is arranged on the other PCB and is responsible for sensing a human body approaching signal; according to the structural design, the device can maintain stable detection capability within a preset sensing distance, and can maintain high performance even in a severe environment. Simply speaking, due to the self-adaptive capability of the device, the functions of automatic cover turning, automatic flushing, noctilucent lighting and the like can be more reliably realized in the intelligent closestool, and the problems of large size, short sensing distance, poor electromagnetic compatibility and tedious manufacturing process of a capacitive sensing module in the prior art are effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of capacitive sensing, and particularly relates to an intelligent closestool and a miniature capacitive kick sensing device thereof. BACKGROUND

[0002] The current intelligent home field is developing rapidly, and the automatic and sensing functions of the intelligent closestool, which is a key device for improving the quality of life of users, are becoming increasingly important. The capacitive sensing module has many applications in the intelligent closestool, such as automatic cover opening, automatic flushing, and night light illumination, which provides great convenience and hygiene protection for users. However, the module still has some technical and design challenges in actual application.

[0003] Specifically, the existing capacitive sensing module often leads to a large volume of the sensing module due to the need for a large sensing area to ensure sufficient sensing distance, thereby being difficult to adapt to the limited space inside the intelligent closestool. In addition, in order to improve the anti-interference ability of the module, the sensing sensitivity of the module has to be sacrificed, but this is likely to cause false triggering or sensing failure in the bathroom environment with more static electricity, affecting the user experience. At the same time, the electronic components and control system inside the intelligent closestool have strict requirements on electromagnetic compatibility (EMC, Electro Magnetic Compatibility), and the EMC performance of the existing capacitive sensing module is insufficient, which may interfere with other electronic devices and affect the stability and reliability of the intelligent closestool.

[0004] Moreover, in the manufacturing process, the existing capacitive sensing module usually needs to be combined with complex first end face surface mounted technology (SMT, Surface Mounted Technology) and manual welding, which not only increases the production cost but also limits the production efficiency, which is not conducive to large-scale production and cost control.

[0005] Therefore, the present application is proposed. UTILITY MODEL CONTENT

[0006] The utility model provides a kind of intelligent closestool and miniature capacitive kick sensing device thereof, can at least partially improve the above problems.

[0007] To achieve the above object, the utility model adopts the following technical solutions:

[0008] A miniature capacitive kick sensing device, comprising: a first PCB board, a second PCB board, a power supply module and a control component arranged on the first end face of the first PCB board, and a sensing module arranged on the first end face of the second PCB board, wherein the area size of the sensing module is consistent with the second PCB board.

[0009] The second end surface of the first PCB plate and the second end surface of the second PCB plate are connected through a half-hole process technology, an output end of the power supply module is electrically connected with a power supply end of the control assembly, an output end of the induction module is electrically connected with an input end of the control assembly, and an output end of the control assembly is electrically connected with a driving device of the intelligent closestool.

[0010] The induction module is configured to sense whether a person is present within a preset range.

[0011] The utility model also provides an intelligent closestool, it includes: closestool body, the driving device who configures on the closestool body and the miniature capacitive kick induction device of any one described above, the output end of control assembly the control end of driving device electric connection, wherein, the driving device includes flip device, flush device, night light device.

[0012] In summary, the miniature capacitive kick induction device is compact in design and realizes perfect combination of small size and high induction performance through unique double-layer printed circuit board structure and half-hole connection technology. The device also enhances resistance to environmental interference while improving induction distance, ensuring stability under various use conditions. The miniature capacitive kick induction device is produced using full-automatic surface mounting technology, which not only improves manufacturing efficiency but also ensures product consistency and reliability. In addition, the adaptive design of the device enables it to maintain excellent induction performance in different working environments, solving the problems of existing capacitive induction modules, such as large size, difficulty in integration, limited induction distance leading to insensitive function, poor electromagnetic compatibility affecting device stability, and complex manufacturing process increasing cost and production time. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structural schematic diagram of the miniature capacitive kick induction device provided by the utility model embodiment;

[0014] Figure 2 is a circuit board schematic diagram of the miniature capacitive kick induction device provided by the utility model embodiment;

[0015] Figure 3 is a circuit schematic diagram of the miniature capacitive kick induction device provided by the utility model embodiment;

[0016] Figure 4 is a flowchart of the miniature capacitive kick induction device provided by the utility model embodiment;

[0017] Figure 5 is a structural schematic diagram of the intelligent closestool provided by the utility model embodiment. DETAILED DESCRIPTION

[0018] In order to make the utility model purposes, technical scheme and advantages more clearly, the following will be further described in detail with examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0019] Reference Figures 1 to 4 The utility model discloses a first embodiment discloses a kind of miniature capacitive kick sensing device, it includes: first PCB board, second PCB board, power supply module and control component configured on the first end surface of the first PCB board and sensing module configured on the first end surface of the second PCB board, wherein, the sensing module area size is consistent with second PCB board;

[0020] The second end surface of the first PCB board and the second end surface of the second PCB board are connected by half-hole process technology, the output end of the power supply module is electrically connected with the power supply end of the control component, the output end of the sensing module is electrically connected with the input end of the control component, and the output end of the control component is used for electrically connecting with the driving device of the intelligent closestool.

[0021] The sensing module is configured to sense whether a person is within a predetermined range.

[0022] Preferably, the first PCB board and the second PCB board are both PCB boards.

[0023] Preferably, the sensing module is a single copper foil layer.

[0024] In this embodiment, the miniature capacitive kick sensing device is a small and sensitive sensor; this sensing device is composed of two thin circuit boards, and the two layers of substrates are tightly stacked together by half-hole process lamination technology. One of the substrates has a power supply and a control chip, and the other layer has a copper foil for sensing the proximity of a person. This design not only makes the sensor smaller, but also enables it to work stably within 3 cm and 3 cm, even in less favorable environmental conditions.

[0025] Specifically, the miniature capacitive kick sensing device is composed of two precise printed circuit boards, i.e. PCB boards, which are tightly laminated together by an innovative half-hole process. This structural design not only greatly reduces the volume of the module, but also improves its overall performance.

[0026] With this lamination design, the sensing device not only maintains sufficient sensing distance, but also solves the problem of complex production process under the premise of small overall area. This design also improves the anti-interference ability and electromagnetic compatibility performance of the module, enabling it to work stably even in environments with high electromagnetic interference.

[0027] The first PCB board integrates a DC power supply and a micro control unit (MCU) sensing signal processing output module, i.e., the control component, which is responsible for stable power supply and accurate signal processing. The second PCB board is a separate copper foil layer, which is the core part of the sensing module and is specifically used to sense the weak capacitance change generated when the human body approaches. This separate copper foil layer design makes the sensing more sensitive and accurate because it can focus more on capturing the signal when the human body approaches. The micro capacitive kick sensor sets the area of the copper foil layer to be the same as the second PCB board, increasing the sensing area of the sensor.

[0028] During production, the micro capacitive kick sensor can be completely manufactured through an automated surface mount technology (SMT) manufacturing process without additional manual soldering. This not only simplifies the production process, improves production efficiency, but also reduces manufacturing costs, making the module more economical and practical.

[0029] The PCB board diagram of the micro capacitive kick sensor is shown in Figure 2 , wherein, Figure 2 (a) is a DC power supply and MCU sensing signal processing output module, Figure 2 (b) is a separate copper foil layer for sensing human approach signals, Figure 2 (c) is the complete PCB assembly (PCBA) after SMT production.

[0030] Preferably, the power supply module is a DC power supply module.

[0031] In this embodiment, the micro capacitive kick sensor uses a DC power supply module. The DC power supply provides a reliable energy source for the sensor due to its stable voltage and current output, directly affecting the sensing sensitivity and accuracy of the module. Stable power supply reduces false triggering or missed triggering caused by power fluctuations, which is particularly important for accurate control of smart toilets and other smart home devices.

[0032] In addition, the design of the DC power supply module is usually more compact, which helps to reduce the overall size of the sensor, making it easier to integrate into space-limited devices. The stability of the power module also improves the anti-interference ability of the module, maintaining stable sensing performance even in complex electromagnetic environments, which is crucial for avoiding electromagnetic interference with other smart home devices.

[0033] Preferably, the control assembly comprises a controller, a voltage reduction circuit, and a level conversion module, an output end of the power supply module is electrically connected with an input end of the voltage reduction circuit, an output end of the voltage reduction circuit is electrically connected with a power supply end of the controller, an output end of the controller is electrically connected with an input end of the level conversion module, and an output end of the level conversion module is used for being electrically connected with a driving device of the intelligent toilet.

[0034] Preferably, the voltage reduction circuit is configured to reduce the 5V voltage input by the power supply module to 3.3V, and the level conversion module is configured to convert the 3.3V voltage output by the controller to 5V.

[0035] Preferably, the model of the controller is SC95FS520M08U.

[0036] In the embodiment, the power supply module provides an input voltage of 5V, which is stably reduced to 3.3V by the voltage reduction circuit for the use of the controller, ensuring that the power supply end of the controller obtains appropriate voltage, thereby improving the energy efficiency and stability of the module. This voltage reduction process effectively avoids the risk of damage to the controller due to excessively high voltage, and also provides a more stable working environment for the controller.

[0037] The controller, as the brain of the sensing module, is responsible for processing signals from the sensing part and can control the corresponding actions of the intelligent toilet according to these signals. In the embodiment, the output end of the controller is connected with the input end of the level conversion module, and the role of the level conversion module is to convert the 3.3V voltage output by the controller to 5V to meet the voltage requirements of the driving device of the intelligent toilet. This voltage conversion ensures the compatibility between the controller and the driving device, so that the sensing module can seamlessly work with other electronic components of the intelligent toilet.

[0038] In the embodiment, the controller of SC95FS520M08U model is adopted, which is a low-power controller. The low-power design of the controller helps to save power and prolong the service life of the device. Moreover, the compact design of this microcontroller makes it easy to install inside the intelligent toilet with limited space, and it is stable and reliable, which can maintain good performance even in a humid bathroom environment. In addition, the fast response capability of this controller ensures that the intelligent toilet can quickly sense the presence of the user and automatically perform functions such as opening the lid, improving the convenience of use.

[0039] It should be noted that in other embodiments, other types of controllers can also be used, which are not limited here, but these solutions are within the protection scope of the present application.

[0040] Preferably, a shell is further included, the first PCB board and the second PCB board are arranged inside the shell, wherein a first clamping groove and a second clamping groove are arranged on the surface of the shell and symmetrically located, and the shell can be clamped on the intelligent closestool outside through the first clamping groove and the second clamping groove.

[0041] In the embodiment, the shell provides necessary physical protection and environmental sealing for the miniature capacitive kick sensing device. First, the shell can protect the sensitive electronic components inside the sensing device from damage, such as preventing impact, vibration or falling during assembly or use. In addition, the shell can prevent the invasion of dust, water and other pollutants, which is particularly important for intelligent closestools used in humid environments such as bathrooms, because these pollutants can affect the performance of electronic components and even cause malfunctions.

[0042] In addition, the use of the shell can also help improve the durability and reliability of the module, as it can withstand wear and tear during daily use, extending the service life of the module. In addition, a well-designed shell can also enhance the electromagnetic compatibility of the module, reducing the impact of external electromagnetic interference on the internal circuit of the module, while also reducing the electromagnetic interference of the module on other devices.

[0043] In addition, two clamping grooves, i.e. a first clamping groove and a second clamping groove, are arranged on the shell and symmetrically located, and the first clamping groove and the second clamping groove are both used to fix the miniature capacitive kick sensing device on the intelligent closestool.

[0044] In summary, the miniature capacitive kick sensing device reduces the size while increasing the distance between the sensing copper surface and the DC power supply and MCU control circuit, greatly improving the sensing ability and anti-interference ability of the module, so that the sensing distance within 3cm has stable detection ability. In terms of production and manufacturing, the module is fully automated and can be completed by SMT manufacturing process, with simple manufacturing process; the module has self-adaptive ability, and its proximity sensing performance is not affected even in harsh environments.

[0045] Please refer to Figure 5 The second embodiment of the utility model provides an intelligent closestool, which comprises a closestool body, a driving device arranged on the closestool body, and a miniature capacitive kick sensing device as described in any one of the above, wherein an output end of the control assembly is electrically connected to a control end of the driving device, and the driving device comprises a flip device, a flushing device and a night light device.

[0046] The above is the preferred embodiment of the utility model, and it should be noted that for ordinary technical personnel in the technical field, without departing from the principle of the utility model, a number of improvements and refinements can be made, and these improvements and refinements are also considered within the protection scope of the utility model.

Claims

1. A micro-capacitive kick sensor device, comprising: The micro capacitive kick sensing device comprises a first PCB board, a second PCB board, a power supply module and a control component arranged on a first end surface of the first PCB board, and an induction module arranged on a first end surface of the second PCB board, wherein the area size of the induction module is consistent with the second PCB board. A second end surface of the first PCB board and a second end surface of the second PCB board are connected through a half-hole process technology, an output end of the power supply module is electrically connected with a power supply end of the control component, an output end of the induction module is electrically connected with an input end of the control component, and an output end of the control component is used for being electrically connected with a driving device of the intelligent closestool. The induction module is arranged to sense whether a person is in a preset range. The induction module is a single copper foil layer. The power supply module is a DC power supply module.

2. The micro-capacitive kick sensor device according to claim 1, wherein, The control component comprises a controller, a voltage reduction circuit, and a level conversion module, an output end of the power supply module is electrically connected with an input end of the voltage reduction circuit, an output end of the voltage reduction circuit is electrically connected with a power supply end of the controller, an output end of the controller is electrically connected with an input end of the level conversion module, and an output end of the level conversion module is used for being electrically connected with the driving device of the intelligent closestool.

3. The micro-capacitive kick sensor device of claim 1, wherein, The voltage reduction circuit is arranged to reduce 5V voltage input by the power supply module to 3.3V, and the level conversion module is arranged to convert 3.3V voltage output by the controller to 5V.

4. The micro-capacitive kick sensor device according to claim 3, wherein, The model of the controller is SC95FS520M08U. The first PCB board and the second PCB board are arranged inside the shell, wherein a first clamping groove and a second clamping groove which are symmetrical to each other are arranged on the surface of the shell, and the shell can be clamped on the outside intelligent closestool through the first clamping groove and the second clamping groove.

5. The micro-capacitive kick sensor device of claim 3, wherein, The closestool body, the driving device arranged on the closestool body, and the micro capacitive kick sensing device according to any one of claims 1 to 6 are comprised, and an output end of the control component is electrically connected with a control end of the driving device, wherein the driving device comprises a flip device, a flushing device, and a night light device.

6. The micro-capacitive kick sensor device of claim 1, wherein, ​ 7. A smart toilet, characterized by, ​

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