CN210157394U

CN210157394U - Toilet seat control circuit

Info

Publication number: CN210157394U
Application number: CN201920754075.7U
Authority: CN
Inventors: 赵红霞
Original assignee: Jiangxi University of Technology
Current assignee: Jiangxi University of Technology
Priority date: 2019-05-23
Filing date: 2019-05-23
Publication date: 2020-03-17
Anticipated expiration: 2029-05-23

Abstract

The utility model discloses a toilet seat control circuit, which comprises a minimum system circuit, a temperature induction circuit, a heating circuit, a close prompting circuit and a human body induction circuit; the minimum system circuit comprises a singlechip, a crystal oscillator circuit and a reset circuit, the singlechip adopts an 8051 series singlechip, the temperature sensing circuit comprises a DS18B20 temperature sensor, the heating circuit comprises a first PTC thermistor and a second PTC thermistor, and the closure prompting circuit comprises a seventh resistor, a first triode and a buzzer; the human body induction circuit comprises a human body infrared sensor, and the human body infrared sensor is connected with a P12 pin of the single chip microcomputer. The utility model provides a toilet seat control circuit is with low costs, and can realize closing the lid and remind.

Description

Toilet seat control circuit

Technical Field

The utility model relates to an intelligent closestool technical field especially relates to a closestool seat circle control circuit.

Background

The long history of the invention of the toilet into people's life, and the continuous improvement and optimization in the process, is just the indispensable existence in our modern life. The traditional closestool is made of ceramic materials, is easy to clean and greatly improves the cleaning problem; however, there is another problem in that the ceramic gives a cool feeling to people in a cold temperature environment due to the material characteristics.

With the improvement of the technological level, people's lives become more comfortable and convenient, and as one of the most representative products of modern smart homes, the smart toilet is a very representative product, and in the smart toilet, seat ring heating is an important function, so that a user can comfortably use the toilet in a cold temperature environment. The intelligent closestool is divided into an integrated type and a separated type, wherein the separated type is realized by adding an intelligent closestool seat ring on the traditional closestool, and the intelligent closestool is more convenient to install and is wider in use.

Toilet seat control circuit is the core technology who realizes the toilet seat heating, and among the prior art, intelligent closestool's toilet seat mainly relies on the import, leads to the cost higher, and present toilet seat control circuit does not possess the close lid and reminds the function, and the experimental result proves, does not close the easy air quality who pollutes the bathroom of toilet lid for a long time, is unfavorable for human health.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model aims to provide a toilet seat control circuit which has low cost and can realize the reminding of closing the cover.

A toilet seat control circuit comprises a minimum system circuit, a temperature sensing circuit, a heating circuit, a close reminding circuit and a human body sensing circuit;

the minimum system circuit comprises a singlechip, a crystal oscillator circuit and a RESET circuit, wherein the singlechip adopts an 8051 series singlechip, the crystal oscillator circuit is connected with an X1 pin and an X2 pin of the singlechip, and the RESET circuit is connected with a RESET pin of the singlechip;

the temperature sensing circuit comprises a DS18B20 temperature sensor, and the DS18B20 temperature sensor is connected with a P10 pin of the singlechip;

the heating circuit comprises a first PTC thermistor and a second PTC thermistor, the first PTC thermistor is connected with a P20 pin of the single chip microcomputer, and the second PTC thermistor is connected with a P21 pin of the single chip microcomputer;

the closing prompt circuit comprises a seventh resistor, a first triode and a buzzer, the seventh resistor is respectively connected with a P22 pin of the single chip microcomputer and a base electrode of the first triode, and an emitting electrode of the first triode is connected with the buzzer;

the human body induction circuit comprises a human body infrared sensor, and the human body infrared sensor is connected with a P12 pin of the single chip microcomputer.

According to the toilet seat control circuit provided by the utility model, the 8051 series single chip microcomputer is used as the control core, the minimum system circuit comprises the single chip microcomputer, the crystal oscillator circuit and the reset circuit, the control function is realized by adopting the minimum elements, the DS18B20 temperature sensor and the two PTC thermistors are adopted simultaneously, so that the cost of the whole toilet seat control circuit is lower, the control principle of the toilet seat control circuit is that the DS18B20 temperature sensor is used for detecting the environmental temperature, the human body infrared sensor is used for detecting whether a user approaches, when the DS18B20 temperature sensor detects that the environmental temperature is lower than the preset value, and the human body infrared sensor detects that the user approaches, the single chip microcomputer controls the first PTC thermistor and/or the second PTC thermistor to start heating work, the heating of the toilet seat is realized, because of the detection function of the human body infrared sensor, only when the user approaches, the heating can be carried out, the energy consumption can be saved, the use cost is reduced, the close-cover prompting circuit is arranged, when the human body infrared sensor detects that a user leaves, the close-cover prompting circuit is controlled by the single chip microcomputer to work, the user is reminded to close the toilet cover through the buzzer, and therefore the pollution to the air of a toilet is reduced.

In addition, according to the present invention, the toilet seat control circuit can further have the following additional features:

further, the toilet seat control circuit further comprises a photosensitive switch circuit, the photosensitive switch circuit comprises a double-voltage comparator and a photosensitive resistor, the double-voltage comparator adopts an LM393, an OUT1 pin of the double-voltage comparator is connected with a P1 pin of the single chip microcomputer, and a V1+ pin of the double-voltage comparator is connected with the photosensitive resistor.

Further, the human body infrared sensor adopts HC-SR501, and an OUT pin of the human body infrared sensor is connected with a P12 pin of the single chip microcomputer.

Further, the toilet seat control circuit also comprises a display circuit, the display circuit comprises an LCD1602 display screen, and the E pin of the LCD1602 display screen is connected with the P27 pin of the single chip microcomputer.

Further, the RESET circuit comprises a first capacitor, a fourth resistor and a key switch, wherein the first capacitor is connected in series with the fourth resistor, the first capacitor is connected in parallel with the key switch, and a connection point of the first capacitor and the fourth resistor is connected with a RESET pin of the single chip microcomputer.

Furthermore, the crystal oscillator circuit comprises a crystal oscillator, a second capacitor and a third capacitor, wherein two ends of the crystal oscillator are respectively connected with the first end of the second capacitor and the first end of the third capacitor, and the second end of the second capacitor and the second end of the third capacitor are grounded.

Further, the temperature sensing circuit further comprises a fifteenth resistor, a first end of the fifteenth resistor is connected with a VCC pin of the DS18B20 temperature sensor, and a second end of the fifteenth resistor is respectively connected with a DQ pin of the DS18B20 temperature sensor and a P10 pin of the single chip microcomputer.

Further, the singlechip is an STC89C52RC singlechip.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a logical block diagram of a toilet seat control circuit according to one embodiment of the present invention;

FIG. 2 is a schematic circuit diagram of a single chip microcomputer and a closing prompting circuit;

FIG. 3 is a schematic diagram of a circuit configuration of a crystal oscillator circuit;

FIG. 4 is a schematic diagram of a circuit configuration of a reset circuit;

FIG. 5 is a schematic circuit diagram of a temperature sensing circuit;

FIG. 6 is a schematic diagram of the circuit configuration of the heating circuit;

FIG. 7 is a schematic diagram of the circuit structure of the human body sensing circuit;

FIG. 8 is a schematic diagram of the circuit configuration of the light sensitive switching circuit;

fig. 9 is a schematic diagram showing a circuit configuration of the circuit.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. Several embodiments of the invention are given in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured 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 also be present. As used herein, the terms "vertical," "horizontal," "left," "right," "up," "down," and the like are for illustrative purposes only and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 7, a toilet seat control circuit according to an embodiment of the present invention includes a minimum system circuit 10, a temperature sensing circuit 20, a heating circuit 30, a close indication circuit 40, and a human body sensing circuit 50.

The minimum system circuit 10 comprises a single chip microcomputer 11, a crystal oscillator circuit 12 and a reset circuit 13, the single chip microcomputer 11 adopts an 8051 series single chip microcomputer, in the embodiment, an STC89C52RC single chip microcomputer is specifically adopted, and the minimum system circuit has the advantages of low cost, strong performance and low power consumption, an 8k byte re-erasable Flash memory and a 512 byte data storage space are arranged in the STC89C52RC single chip microcomputer, programming and erasing are easy, and the storage technology is stable and is not easy to distort. The running speed can be increased by switching the clock mode, and the 4K bytes EEPROM storage space is arranged in the EEPROM. The compatibility is strong, the ISP/IAP can be downloaded by directly using a serial port and any instruction of MCS-51 series is used.

The crystal oscillator circuit 12 is connected with an X1 pin and an X2 pin of the singlechip 11. The crystal oscillator circuit 12 specifically includes a crystal oscillator Y1, a second capacitor C2, and a third capacitor C3, wherein two ends of the crystal oscillator Y1 are respectively connected to the first end of the second capacitor C2 and the first end of the third capacitor C3, and the second end of the second capacitor C2 and the second end of the third capacitor C3 are grounded.

The RESET circuit 13 is connected with a RESET pin of the single chip microcomputer. The RESET circuit 13 specifically includes a first capacitor C1, a fourth resistor R4 and a key switch S5, the first capacitor C1 and the fourth resistor R4 are connected in series, the first capacitor C1 and the key switch S5 are connected in parallel, a connection point of the first capacitor C1 and the fourth resistor R4 is connected to a RESET pin of the single chip microcomputer 11, and the RESET circuit 13 is configured to RESET when an error occurs in operation.

The temperature sensing circuit 20 comprises a DS18B20 temperature sensor 21, and the DS18B20 temperature sensor 21 is connected with a P10 pin of the singlechip 11. Specifically, the temperature sensing circuit 20 further includes a fifteenth resistor R15, a first end of the fifteenth resistor R15 is connected to the VCC pin of the DS18B20 temperature sensor 21, and a second end of the fifteenth resistor R15 is connected to the DQ pin of the DS18B20 temperature sensor 21 and the P10 pin of the single chip microcomputer 11, respectively. The DS18B20 temperature sensor 21 is used for detecting the ambient temperature, the detection range is-55 ℃ to +125 ℃, and the requirement of the toilet seat application environment can be met.

The heating circuit 30 includes a first PTC thermistor 31 and a second PTC thermistor 32, the first PTC thermistor 31 is connected to a pin P20 of the single chip microcomputer 11, and the second PTC thermistor 32 is connected to a pin P21 of the single chip microcomputer 11. Through designing two PTC thermistors, the effect of heating at two temperatures can be realized, and the requirements of different users are met. Specifically, light emitting diodes D2 and D3 may be provided in connection with the first PTC thermistor 31 and the second PTC thermistor 32, respectively, for indicating the heating condition.

The closing prompt circuit 40 comprises a seventh resistor R7, a first triode Q1 and a buzzer 41, wherein the seventh resistor R7 is respectively connected with a pin P22 of the single chip microcomputer 11 and a base electrode of the first triode Q1, and an emitter electrode of the first triode Q1 is connected with the buzzer 41.

The human body induction circuit 50 comprises a human body infrared sensor 51, and the human body infrared sensor 51 is connected with a P12 pin of the singlechip 11. The human body infrared sensor 51 specifically adopts HC-SR501, and an OUT pin of the human body infrared sensor 51 is connected with a P12 pin of the single chip microcomputer 11.

The control principle of the toilet seat control circuit is as follows: the DS18B20 temperature sensor 21 detects the ambient temperature, and the human body infrared sensor 51 detects whether the user approaches, when the DS18B20 temperature sensor 21 detects that the ambient temperature is lower than a preset value (for example, the ambient temperature is lower than 15 ℃), and the human body infrared sensor 51 detects that the user approaches, the singlechip 11 controls the first PTC thermistor 31 and/or the second PTC thermistor 32 to start heating, so that the toilet seat is heated. After the user uses up the closestool, human infrared sensor 51 detects that the user leaves, singlechip 11 control closes and indicates circuit 40 work, control first PTC thermistor 31 and second PTC thermistor to stop heating work simultaneously, remind the user to close the closestool lid through buzzer 41, specifically can be when human infrared sensor 51 detects nobody within 5 seconds, can send a section (duration 3 seconds about) suggestion sound through buzzer 41, remind the user to close the closestool lid, the user can be after closing the closestool lid, wash by water again.

Optionally, referring to fig. 8 and fig. 1, the toilet seat control circuit further includes a photosensitive switch circuit 60, the photosensitive switch circuit 60 includes a dual-voltage comparator 61 and a photosensitive resistor 62, the dual-voltage comparator 61 adopts an LM393, an OUT1 pin of the dual-voltage comparator 61 is connected to a P1 pin of the single chip microcomputer 11, and a V1+ pin of the dual-voltage comparator 61 is connected to the photosensitive resistor 62. Through designing photosensitive switch circuit 60, whether detect the user with human infrared sensor 51 together and be close to, it is concrete, photo resistor 62 can set up on the seat, when the user is close to the closestool, when beginning to sit on the closestool seat, human infrared sensor 51 detects the user and is close to, and photo resistor 62 detects the luminous intensity and reduces gradually, and simultaneously, DS18B20 temperature sensor 21 detects ambient temperature and is less than the default, first PTC thermistor 31 of singlechip 11 recontrol and/or second PTC thermistor 32 start heating work, realize the heating of closestool seat, ensure to carry out the accuracy that detects to the user. Correspondingly, after the user uses the toilet, the human body infrared sensor 51 detects that the user leaves, the light sensitive resistor 62 detects that the light intensity is gradually increased, the single chip microcomputer 11 controls the cover closing prompting circuit 40 to work, and controls the first PTC thermistor 31 and the second PTC thermistor to stop heating work at the same time, and the buzzer 41 reminds the user to close the toilet cover.

Optionally, referring to fig. 9 and fig. 1, the toilet seat control circuit further includes a display circuit 70, the display circuit 70 includes an LCD1602 display screen 71, an E pin of the LCD1602 display screen 71 is connected with a P27 pin of the single chip microcomputer 11, and the ambient temperature detected by the DS18B20 temperature sensor 21 is displayed through the LCD1602 display screen 71, so as to prompt a user to use the toilet seat.

In summary, according to the toilet seat control circuit provided by this embodiment, an 8051 series single chip microcomputer is used as a control core, a minimum system circuit includes the single chip microcomputer, a crystal oscillator circuit and a reset circuit, the control function is realized by using the minimum number of components, and meanwhile, a DS18B20 temperature sensor and two PTC thermistors are used, so that the cost of the whole toilet seat control circuit is low.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A toilet seat control circuit is characterized by comprising a minimum system circuit, a temperature sensing circuit, a heating circuit, a close prompting circuit and a human body sensing circuit;

2. The toilet seat control circuit according to claim 1, further comprising a photosensitive switching circuit, wherein the photosensitive switching circuit comprises a dual voltage comparator and a photosensitive resistor, the dual voltage comparator adopts LM393, an OUT1 pin of the dual voltage comparator is connected with a P1 pin of the single chip microcomputer, and a V1+ pin of the dual voltage comparator is connected with the photosensitive resistor.

3. The toilet seat control circuit according to claim 1, wherein the human body infrared sensor is HC-SR501, and an OUT pin of the human body infrared sensor is connected with a P12 pin of the single chip microcomputer.

4. The toilet seat control circuit according to claim 1, further comprising a display circuit, wherein the display circuit comprises an LCD1602 display screen, and an E pin of the LCD1602 display screen is connected to a P27 pin of the single chip microcomputer.

5. The toilet seat control circuit according to claim 1, wherein the RESET circuit comprises a first capacitor, a fourth resistor and a key switch, the first capacitor and the fourth resistor are connected in series, the first capacitor and the key switch are connected in parallel, and a connection point of the first capacitor and the fourth resistor is connected with a RESET pin of the single chip microcomputer.

6. The toilet seat control circuit of claim 1, wherein the crystal oscillator circuit comprises a crystal oscillator, a second capacitor and a third capacitor, two ends of the crystal oscillator are respectively connected with a first end of the second capacitor and a first end of the third capacitor, and a second end of the second capacitor and a second end of the third capacitor are grounded.

7. The toilet seat control circuit according to claim 1, wherein the temperature sensing circuit further comprises a fifteenth resistor, a first end of the fifteenth resistor is connected with the VCC pin of the DS18B20 temperature sensor, and a second end of the fifteenth resistor is respectively connected with the DQ pin of the DS18B20 temperature sensor and the P10 pin of the single chip microcomputer.

8. A toilet seat control circuit as claimed in any one of claims 1 to 7, wherein the single chip microcomputer is an STC89C52RC single chip microcomputer.