CN112127738A

CN112127738A - Intelligent window control system and control method thereof

Info

Publication number: CN112127738A
Application number: CN202011175638.0A
Authority: CN
Inventors: 尚慧琳; 蒋慧敏; 任立强; 姚成; 李玮祎; 杨欣彤; 季斐宇
Original assignee: Shanghai Institute of Technology
Current assignee: Shanghai Institute of Technology
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2020-12-25

Abstract

The invention discloses an intelligent window control system and a control method thereof, wherein the intelligent window control system comprises a glass frame, a window frame, a sliding chute, a switch key, a microcontroller, a driving motor, a power supply, two first distance measuring sensors and two second distance measuring sensors, wherein the window can be automatically opened and closed through the switch key, and when a child is detected to exceed the safe distance from the window, the window is automatically closed; if the blocking of the living body is detected in the window closing process, the microcontroller controls the driving motor to rotate reversely so as to prevent the window from clamping the living body. Compared with the control mode, the anti-clamping device and the circuit design of the existing intelligent window, the anti-falling device has the advantages of simple structure, easiness in adjustment and convenience in operation.

Description

Intelligent window control system and control method thereof

Technical Field

The invention relates to the technical field of window control, in particular to an intelligent window control system and a control method thereof.

Background

In recent years, smart homes become a hot topic in China, smart windows certainly become an indispensable part of the smart homes, and many researches are initiated.

However, at present, windows used in both household houses and public places such as shopping malls and hospitals are conventional, i.e. the windows need to be opened and closed manually. In the prior art, the conventional window has the following problems: special people such as elderly people, children, and disabled people can not reach the window or do not have the window opening capability. Even though some home houses have smart windows installed, a security window system is still lacking. Also, in such a fast pace of life, it is often transmitted to high-rise buildings, resulting in a child falling event due to a failure to close the window in a timely manner. Most of the existing protective windows achieve the anti-falling effect by arranging a protective net or a protective guard on the window, the methods not only have certain influence on indoor lighting, but also more importantly, the protective guard outside the window can greatly reduce the possibility of survival or escape of people in emergency situations such as fire and the like, and the methods can more or less influence the life quality of people.

At present, most protective window do not have the function of preventing pressing from both sides, and some current windows that have the function of preventing pressing from both sides also need to run into very big resistance after just can stop or descend, and this can cause certain injury to the user, especially to younger children. The children are naturally good, and in addition, adults sometimes do not take care of the children at all, accidents that the children are injured by window clamping or are killed by clamping occur at all times, and according to statistics, some countries in Europe and America can generate several accidents that the children are suffocated due to window clamping every year. The existing anti-pinch function detection technology for anti-pinch windows comprises an infrared sensor type, a pressure sensor type and a Hall sensor type.

The infrared sensor type detection technology is characterized in that infrared light is used for detecting whether foreign objects exist in the moving range of a window, and a control unit sends an instruction to stop or reversely rotate a driving motor to drive the window to stop or reversely rotate, so that an anti-pinch function is realized.

The pressure sensor type detection technology is that a pressure sensor is arranged in an upper frame of a window, when the window rises and clamps an object, the pressure sensor feeds back a trigger signal, and a control unit sends an instruction to stop or rotate reversely a driving motor to drive the window to stop or rotate reversely, so that an anti-pinch function is realized.

The Hall sensor type detection technology utilizes a Hall element to monitor the movement position of a window, when the window in motion is subjected to transverse or forward pressure, the Hall sensor type detection technology can bring a large load to a driving motor, when the pulse width induced by the Hall element reaches a certain degree, a control unit judges that the window meets resistance in the rising process, and the control unit sends an instruction to stop or reversely rotate the driving motor to drive the window to stop or reversely rotate, so that an anti-pinch function is realized.

The anti-pinch detection technology or research has the following disadvantages: the pressure sensor type detection technology has the disadvantages of high cost and easy false triggering; the Hall sensor type detection technology has a good effect on detecting objects with high hardness, and has a non-ideal effect on detecting objects with low hardness. Because the contact type anti-pinch based on the Hall sensor widely adopted in the world at present is no longer suitable for the social requirement of rapid development, and the Hall-free sensor is adopted in the invention, the cost is greatly reduced.

Consequently, design an intelligent security protection window, realize self-closing and open the function of window, carry out ventilation to have safety protection and prevent the performance of pressing from both sides, give people and bring more comfortable experience at home.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides an intelligent window control system and a control method thereof, wherein the automatic opening and closing of a window can be realized through a switch key, and when a child is detected to exceed the safe distance from the window, the window is automatically closed; if the blocking of the living body is detected in the window closing process, the microcontroller controls the motor driving module to reversely rotate. The invention can effectively prevent the infant from accidentally falling from the window, thereby avoiding tragedy.

In order to achieve the above purpose, the technical solution for solving the technical problem is as follows:

the invention discloses an intelligent window control system, which comprises a glass frame, a window frame, a sliding chute, a switch button, a microcontroller, a driving motor, a power supply, two first distance measuring sensors and two second distance measuring sensors, wherein:

the glass frame is embedded in the window frame;

the sliding grooves are vertically arranged on the left side and the right side of the window frame;

the two first ranging sensors are respectively arranged in the sliding groove;

the lower end of the glass frame is provided with a spur rack and is meshed with a gear of the driving motor;

the two first ranging sensors are arranged in the sliding groove, are electrically connected with the microcontroller and are used for generating first sensing information and sending the first sensing information to the microcontroller when a child is detected to approach the window;

the two second distance measuring sensors are fixed on the frame of the glass frame, electrically connected with the microcontroller and used for generating second sensing information and sending the second sensing information to the microcontroller when the window is detected to be blocked by a living body in the closing process;

the switch key is arranged on the window frame or the glass frame, is electrically connected with the microcontroller and is used for sending a switch signal to the microcontroller after a user presses the switch key;

microcontroller with first range finding sensor, second range finding sensor, switch button, driving motor and power electric connection for:

receiving first sensing information sent by the first distance measuring sensor and sending a first control instruction to the driving motor to drive the window to be automatically closed when the first sensing information is smaller than a first preset safe distance value;

receiving second sensing information sent by the second distance measuring sensor and sending a second control instruction to the driving motor to control the driving motor to rotate reversely when the second sensing information is smaller than a second preset safe distance value so as to prevent the window from being clamped to the life body;

receiving the switch information sent by the switch key to drive the driving motor to control the window to be automatically opened or closed;

the driving motor is electrically connected with the microcontroller and is used for automatically closing or opening the window according to a first control instruction, a second control instruction or a switch signal output by the microcontroller;

the power with first range finding sensor, second range finding sensor, microcontroller and driving motor electric connection for provide first range finding sensor, second range finding sensor, microcontroller and driving motor's working power supply.

Further, still include motor mounting groove, rack stiff end and gear, wherein:

the motor mounting groove is concavely arranged on the upper surface of the lower part of the window frame and is used for mounting the driving motor in the motor mounting groove;

the fixed ends of the racks are positioned at two ends of the straight rack and are used for fixing the straight rack at the lower end of the glass frame;

the gear is arranged on the output shaft of the driving motor and is meshed with the straight rack.

Preferably, the chute has a length of about 0.8-1.0 m.

Preferably, the two second distance measuring sensors are arranged at a position 5-10cm away from the bottom end of the glass frame.

Preferably, the first distance measuring sensor and the second distance measuring sensor are ultrasonic distance measuring sensors, laser distance measuring sensors or infrared distance measuring sensors.

Preferably, the microcontroller adopts an STM8S singlechip.

The invention also discloses a control method of the intelligent window control system, which utilizes the window control system to control and comprises the following steps:

step 1: detecting the distance between the child and the window body through a first distance measuring sensor arranged in the sliding chute to generate first sensing information, judging that the window body is dangerous if the first sensing information is smaller than a first preset safe distance value, and sending a first control instruction by the microcontroller to control the driving motor to drive the window body to be automatically closed;

step 2: whether a window is blocked by a life body in the closing process or not is detected through a second distance measuring sensor arranged in the glass frame, if the second sensing information is smaller than a second preset safe distance value, blocking is judged, and the microcontroller controls the driving motor to rotate reversely so as to prevent the window from clamping the life body.

Further, the method also comprises the step 3: and the driving motor is driven to control the window to be automatically opened or closed by pressing a switch key arranged on the window frame or the glass frame.

Preferably, in step 1, the first preset safe distance value is 0.5m to 0.8 m.

Preferably, in step 2, the second preset safe distance value is 10cm-20 cm.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects:

the invention adopts the infrared sensor to detect whether a child approaches the window, when the microcontroller receives first sensing information output by the first distance measuring sensor arranged in the window frame, the microcontroller judges whether the child approaches the window, the driving motor is driven by the received signal to control the automatic opening and closing of the window, and in the process of closing the window, the second distance measuring sensor arranged in the glass frame reverses the window if detecting the blockage of a life body, thereby improving the use safety.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

fig. 1 is a control principle structure diagram of an intelligent window control system according to the present invention;

FIG. 2 is a window elevation view of a smart window control system of the present invention;

FIG. 3 is a cut-away view of a window of a smart window control system of the present invention;

FIG. 4 is an enlarged schematic view of a motor mounting groove structure of an intelligent window control system according to the present invention;

FIG. 5 is a schematic diagram of an infrared sensor circuit of a smart window control system according to the present invention;

FIG. 6 is a general design diagram of the overall hardware circuit of an intelligent window control system according to the present invention;

FIG. 7 is a schematic structural diagram of a controller of an intelligent window control system according to the present invention;

fig. 8 is a first flowchart illustrating a control method of the smart window control system according to the present invention;

fig. 9 is a second flowchart of a control method of the smart window control system according to the present invention.

[ description of main symbols ]

1-a glass frame;

2-a window frame;

3-a chute;

4-driving the motor;

5-a first ranging sensor;

6-a second ranging sensor;

7-motor mounting groove;

8-straight rack;

9-rack fixing end;

10-gear.

Detailed Description

While the embodiments of the present invention will be described and illustrated in detail with reference to the accompanying drawings, it is to be understood that the invention is not limited to the specific embodiments disclosed, but is intended to cover various modifications, equivalents, and alternatives falling within the scope of the invention as defined by the appended claims.

Example one

As shown in fig. 1 to 7, the present invention discloses an intelligent window control system, which comprises a glass frame 1, a window frame 2, a sliding chute 3, a switch button (not shown), a microcontroller (not shown), a driving motor 4, a power supply (not shown), and two first and second

distance measuring sensors

5 and 6, wherein:

the glass frame 1 is embedded in the window frame 2;

the sliding grooves 3 are vertically arranged on the left side and the right side of the window frame 2; preferably, the chute 3 is about 0.8-1.0m in length.

The two first distance measuring sensors 5 are respectively arranged in the sliding chute 3;

the lower end of the glass frame 1 is provided with a spur rack 8 which is meshed with a gear 10 of the driving motor 4;

the two first distance measuring sensors 5 are arranged in the sliding groove 3, are electrically connected with the microcontroller and are used for generating first sensing information and sending the first sensing information to the microcontroller when a child is detected to approach the window; in this embodiment, the first distance measuring sensor 5 can be adjusted in installation height according to the height of the child.

The two second distance measuring sensors 6 are fixed on the frame of the glass frame 1, electrically connected with the microcontroller and used for generating second sensing information and sending the second sensing information to the microcontroller when the window is detected to be blocked by a living body in the closing process; preferably, the two second distance measuring sensors 6 are arranged at a position 5-10cm away from the bottom end of the glass frame 1.

The switch key is arranged on the window frame 2 or the glass frame 1, is electrically connected with the microcontroller and is used for sending a switch signal to the microcontroller after a user presses the switch key;

microcontroller with first range sensor 5, second range sensor 6, switch button, driving motor 4 and power electric connection for:

receiving first sensing information sent by the first distance measuring sensor 5 and sending a first control instruction to the driving motor 4 to drive the window to be automatically closed when the first sensing information is smaller than a first preset safe distance value;

receiving second sensing information sent by the second distance measuring sensor 6 and sending a second control instruction to the driving motor 4 to control the driving motor to rotate reversely when the second sensing information is smaller than a second preset safe distance value so as to prevent the window from being clamped to the living body;

receiving the switch information sent by the switch key to drive the driving motor 4 to control the window to be automatically opened or closed;

the driving motor 4 is electrically connected with the microcontroller and is used for automatically closing or opening the window according to a first control instruction, a second control instruction or a switch signal output by the microcontroller;

the power with first range finding sensor 5, second range finding sensor 6, microcontroller and 4 electric connection of driving motor for provide first range finding sensor 5, second range finding sensor 6, microcontroller and 4's of driving motor working power supply.

With further reference to fig. 4, the window control system further includes a motor mounting groove 7, a rack fixing end 9 and a gear 10, wherein the motor mounting groove 7 is concavely provided on the upper surface of the lower portion of the window frame 2 for mounting the driving motor 4 in the motor mounting groove 7; the rack fixing ends 9 are positioned at two ends of the straight rack 8 and are used for fixing the straight rack 8 at the lower end of the glass frame 1; the gear 10 is mounted on the output shaft of the driving motor 4 and is meshed with the spur rack 8.

Preferably, the first distance measuring sensor 5 and the second distance measuring sensor 6 are ultrasonic distance measuring sensors, laser distance measuring sensors or infrared distance measuring sensors. In this embodiment, as shown in fig. 5, the first distance measuring sensor 5 and the second distance measuring sensor 6 both adopt infrared sensors, and have three pins: after the infrared sensor is connected with the power supply, the sensor signal outputs analog quantity, the analog quantity is output according to the distance between the shielding objects, an output signal pin is connected to an AD acquisition port of the single chip microcomputer, and the single chip microcomputer converts the analog quantity into digital quantity. The sensor is connected to a 5V power supply by mainly using a triangulation method.

As shown in fig. 6, the microcontroller employs ST series STM8S single chip microcomputer of minimum system application system. The minimum system of the single chip microcomputer comprises a reset circuit, a filter circuit, a crystal oscillator circuit, a program flash interface and a power indicator lamp circuit which are necessary for the normal work of the single chip microcomputer, the STM8S is a medium-density program and data memory with a 2K byte clock, reset and power management, the minimum system of the single chip microcomputer has a low power consumption mode, and the peripheral clock can be independently used for closing the power management. Compared with a traditional 51-chip microcomputer, the STM8S chip is low in price and has multiple functions. The minimum application system of the single chip microcomputer is provided with 4 main clock sources, has the characteristic of flexible clock control, is provided with a clock safety guarantee system for clock monitoring, is powered on with low power consumption and is opened permanently after voltage drop reset, and is provided with interrupt management, a timer, a communication interface and an I/O port. The working voltage of the minimum application system of the single chip microcomputer is 3.0-5.5V, a 5V battery is used as a power supply for the power supply, a 3.3V power supply is used for supplying power for the single chip microcomputer, an indicator lamp, a reset circuit and the like, a 5V power supply is used for supplying power for a sensor, a motor drive and a switch signal, 5V is converted into 3.3V mainly by DC/DC, and 5V and 3.3V are realized by the power supply. In the process of the voltage reduction circuit, a voltage stabilizing component, a voltage stabilizing diode, a capacitor and the like exist, and meanwhile, the power supply is processed in common ground.

The motor driving circuit is mainly used for driving the window to open and close, and the single chip microcomputer drives and controls the driving motor 4 according to the opening and closing signals and the sensor signals. The singlechip controls the pin I/O control triode, the drive motor 4 is controlled by the triode to realize driving, and the drive motor 4 drives the window to realize control. In this embodiment, the triode is selected from S8050, and the single chip mainly controls the base of the triode and controls the triode to realize conduction and cut-off.

As shown in fig. 7, the switch circuit is mainly used as an instruction signal to indicate a current instruction for controlling the window, and mainly comprises a switch and a pull-up circuit, when a switch button is pressed, the single chip acquires a power signal, and controls the window to be opened or closed according to the power signal.

The window control circuit mainly realizes the collection of switch signals and the collection of an infrared sensor, and realizes the driving of a motor according to a control strategy. The system circuit mainly comprises a singlechip system circuit and a peripheral function circuit, wherein the system circuit is mainly divided into a filter circuit, a crystal oscillator circuit, a reset circuit and a power supply indicating circuit; the peripheral function circuit mainly comprises a DC/DC module, a switch circuit, an infrared acquisition circuit, a motor drive circuit and a window state indicator lamp circuit.

The whole system module is mainly integrated by a plurality of independent modules, and the working process mainly comprises the following steps: initializing a clock, an I/O port, an AD and the like of each submodule, and then acquiring an infrared sensor and a switch output level signal; and controlling a triode according to the switch level signal acquired by the judgment logic, controlling the driving motor 4 by the triode, and simultaneously outputting a signal circuit LED indicator lamp by the I/O.

Example two

As shown in fig. 8, the present invention also discloses a control method of an intelligent window control system, which utilizes the window control system to perform control, and comprises the following steps:

step 1: detecting the distance between a child and the window body through a first distance measuring sensor 5 arranged in the sliding chute 3 to generate first sensing information, judging that the window body is dangerous if the first sensing information is smaller than a first preset safe distance value, and sending a first control instruction by the microcontroller to control the driving motor 4 to drive the window body to automatically close;

step 2: whether a window is blocked by a life body in the closing process or not is detected through a second distance measuring sensor 6 arranged in the glass frame 1, and if the second sensing information is smaller than a second preset safe distance value, the second sensing information is judged to be blocked, and the microcontroller controls the driving motor 4 to rotate reversely so as to prevent the window from clamping the life body.

As further shown in fig. 9, the control method further includes step 3: and the driving motor 4 is driven to control the window to be automatically opened or closed by pressing a switch button arranged on the window frame 2 or the glass frame 1.

Preferably, in step 1, the first preset safe distance value is 0.5m to 0.8 m.

Preferably, in step 2, the second preset safe distance value is 10cm-20 cm.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides an intelligent window control system, its characterized in that includes glass frame, window frame, spout, switch button, microcontroller, driving motor, power to and two first range finding sensors and second range finding sensor, wherein:

the glass frame is embedded in the window frame;

the two first ranging sensors are respectively arranged in the sliding groove;

2. The smart window control system of claim 1, further comprising a motor mounting slot, a rack securing end and a gear, wherein:

3. The smart window control system of claim 1 wherein said chute length is about 0.8-1.0 m.

4. The smart window control system of claim 1, wherein two of said second ranging sensors are mounted 5-10cm from the bottom end of said bezel.

5. The smart window control system of claim 1, wherein the first and second ranging sensors are ultrasonic ranging sensors, laser ranging sensors, or infrared ranging sensors.

6. A smart window control system as claimed in claim 1 wherein the microcontroller employs an STM8S single chip microcomputer.

7. A control method of a smart window control system, characterized in that the control method is performed by the window control system of any one of the preceding claims 1 to 6, and comprises the following steps:

8. A control method of a smart window control system according to claim 7, further comprising the step of 3: and the driving motor is driven to control the window to be automatically opened or closed by pressing a switch key arranged on the window frame or the glass frame.

9. A control method of a smart window control system according to claim 7, wherein in step 1, said first preset safe distance value is 0.5m-0.8 m.

10. A control method of a smart window control system according to claim 7, wherein in step 2, the second preset safe distance value is 10cm-20 cm.