Non-contact low-power-consumption gas stove switch and fire monitoring wireless communication device

Abstract

The invention discloses a non-contact low-power-consumption gas stove switch and fire monitoring wireless communication device which comprises a knob switch assembly, the knob switch assembly is located at the switch position of a household gas stove, and a magnet assembly is arranged between the position below the 6 o'clock position of the knob switch assembly and the household gas stove. A battery assembly, an antenna, an MCU, a wireless communication module, a buzzer assembly, a UV ultraviolet sensor assembly, a normally-closed reed switch, a thermopile temperature sensor assembly and a central semicircular hole are installed in the knob switch assembly. According to the non-contact low-power-consumption gas stove switch and fire monitoring wireless communication device, a traditional switch knob is adopted for installation, installation is easy and convenient, cost is low, low-power-consumption wireless communication is achieved, monitoring data can be transmitted in real time, a button cell is adopted for power supply, replacement and maintenance are easy and convenient, power consumption is low, the cell can be used for a long time, and the device is convenient to use. The easy-to-purchase button cell is used for supplying power, and maintenance is easy and convenient.

Description

Technical Field

[0001] The invention relates to the technical field of electronic circuits, and in particular to a non-contact low-power consumption gas stove switch and a fire monitoring wireless communication device. Background Art

[0002] The low-power gas stove switch and fire monitoring wireless communication device is a supporting device for controlling the switch of the gas stove, involving flame ultraviolet spectrum detection, remote thermopile temperature detection, switch status monitoring, buzzer alarm, wireless communication, low-power circuit design, battery power supply, and can replace the gas stove switch. By continuously monitoring whether the gas switch is currently on or off, and whether it is a large fire, a small fire, or a flameout in an abnormally closed state, the monitoring and statistics of the fire status can be realized. As home-based elderly care becomes more and more common, the potential dangerous conditions in the daily life of the elderly are attracting more and more attention. On the one hand, the memory and action of the elderly become forgetful and slow with age, and on the other hand, there are some existing technologies that do not take into account the usage habits and scenarios of elderly users. For example: sometimes you forget to turn on the gas stove in a blink of an eye, and you don’t remember it until the water dries up and the whole house is filled with smoke.

[0003] Gas stoves are a necessity in modern life. Even when people are old, they need to have at least two meals a day. Therefore, the safe use and status monitoring of gas stoves are becoming more and more important. In addition to knowing the regularity of the elderly's daily diet, it can also remind whether the use status of the gas stove is within the safe range. With the continuous development of technology, people have higher and higher requirements for the manufacturing process of low-power gas stove switches and fire monitoring wireless communication devices.

[0004] The existing gas stove switch has certain drawbacks when used. At present, the switch on the gas stove head is only used to turn the fire on and off and switch the large and small fire modes. Whether the fire is properly turned on and off depends entirely on visual observation; of course, the gas stove itself also has the ability to cut off the gas supply if no flame is detected in the fire mode. But other than that, there is no monitoring and communication capability of status data.

[0005] In addition, you can also modify the valve in front of the gas stove at home. There are similar products on the market. However, it is difficult to install and changes the appearance of the valve structure, which may pose certain safety hazards.

[0006] In addition, there are many sensor devices that monitor natural gas leaks. However, these devices are alarm devices that only provide an alarm when a leak occurs, and cannot make advance judgments or monitor the entire process. Therefore, they do not play a role in preventing leaks in actual use.

[0007] It is best to have such a device with the following characteristics: ① Simple usage without changing the user's habits; ② Simple and convenient installation, low cost, and easy to use; ③ With wireless communication capabilities, real-time status monitoring and data processing and transmission; ④ Powered by easily purchased button batteries, simple and convenient maintenance; ⑤ Meet ultra-low power consumption requirements, so that the battery can maintain a long service life (such as 1 year, etc.). At present, it is difficult to find such a switch device that takes into account the above characteristics at the same time in the market. For this reason, we propose a non-contact low-power gas stove switch and fire monitoring wireless communication device. Summary of the invention

[0008] Technical problem to be solved: In view of the shortcomings of the prior art, the present invention provides a contactless low-power gas stove switch and fire monitoring wireless communication device, which is installed using a traditional switch knob, is simple and convenient to install, has low cost, low-power wireless communication, can transmit monitoring data in real time, is powered by button batteries, is simple and convenient to replace and maintain, has low power consumption, and the battery can be used for a long time, which can effectively solve the problems in the background technology.

[0009] Technical solution: To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a non-contact low-power consumption gas stove switch, including a knob switch assembly, and the knob switch assembly is located at the switch position of a household gas stove, a magnet assembly is arranged below the o'clock position of the knob switch assembly and between the household gas stove, a battery assembly, an antenna, an MCU, a wireless communication module, a buzzer assembly, a UV ultraviolet sensor assembly, a normally closed reed switch, a thermopile temperature sensor assembly and a central semicircular hole are installed inside the knob switch assembly, and the knob switch assembly is divided into a high fire mode and a low fire mode.

[0010] As a preferred technical solution of the present application, when the knob switch assembly is ready to start firing, the normally closed reed switch leaves the lower magnet assembly and presents a closed state, when the knob switch assembly is turned to high fire mode, the UV ultraviolet sensor assembly starts working, and when the knob switch assembly is turned to low fire mode, the thermopile temperature sensor assembly enters a working state, and when it is detected that the knob switch assembly is not closed and is in a no-fire state, the buzzer assembly enters a working state, and the status data during this period will be sent to the receiving device end through a low-power microprocessor-controlled wireless module.

[0011] A non-contact low-power gas stove fire monitoring wireless communication device, comprising a reed switch unit, a UV ultraviolet sensor unit, a thermopile temperature sensor unit, a buzzer unit, a low-power microprocessor unit, a power supply circuit, an electronic switch unit, a wireless communication unit, a power supply battery and an anti-reverse connection protection circuit. The low-power microprocessor unit serves as a main control unit, and its sleep current is 1uA. The power supply circuit provides power. When the low-power microprocessor unit receives a signal from the reed switch unit, it immediately supplies power to the UV ultraviolet sensor unit through the electronic switch unit and reads the signal of the UV ultraviolet sensor unit in real time. It analyzes whether it is currently in a high fire state through an algorithm. At the same time, the low-power microprocessor unit controls The electronic switch unit switches on and off the power of the wireless communication unit to send real-time data. When the low-power microprocessor unit detects that the signal of the UV ultraviolet sensor unit does not meet a certain condition, the low-power microprocessor unit controls the electronic switch unit to supply power to the thermopile temperature sensor unit and reads the real-time temperature. An algorithm is used to determine whether the unit is in a low-fire state or has no flame. When the low-power microprocessor unit determines that there is no flame and does not receive a shutdown signal from the reed switch unit, it controls the electronic switch unit to supply power to the buzzer unit and emit an alarm sound. At the same time, the current status data is controlled by the low-power microprocessor unit to switch on and off the power of the wireless communication unit to send real-time data.

[0012] As a preferred technical solution of the present application, the power supply in the power supply circuit uses two CR2450 power supply batteries. The power supply batteries are powered by an electronic switch unit after passing through an anti-reverse polarity protection circuit. The anti-reverse polarity protection circuit protects the subsequent circuit. When the positive and negative poles of the power supply batteries are installed reversely, the anti-reverse polarity protection circuit will cut off the power supply to the subsequent circuit.

[0013] As a preferred technical solution of the present application, the reed switch unit enters a closed state after leaving the magnet, and the signal is captured by the low-power microprocessor unit. The low-power microprocessor unit determines that it has entered the firing state and enters the next judgment logic.

[0014] As a preferred technical solution of the present application, the low-power microprocessor unit controls the electronic switch unit to supply power to the UV ultraviolet sensor unit, and at the same time receives a signal from the UV ultraviolet sensor unit.

[0015] As a preferred technical solution of the present application, the low-power microprocessor unit controls the electronic switch unit to supply power to the thermopile temperature sensor unit, and simultaneously receives temperature data from the thermopile temperature sensor unit, and analyzes the current flame mode according to the current temperature combined with the algorithm.

[0016] As a preferred technical solution of the present application, the low-power microprocessor unit controls the electronic switch unit to supply power to the buzzer unit and controls the alarm sound.

[0017] As a preferred technical solution of the present application, the wireless communication unit is divided into three states: sleep, start, and run. The wireless communication unit is started under the control of the low-power microprocessor unit. The duration of the two running states is extremely short. During the remaining time period, the wireless communication unit is in a sleep state and does not consume any power from the power supply battery. The power supply circuit supplies power to the wireless communication unit through an electronic switch unit. Under the control of the low-power microprocessor unit, the wireless communication unit is only powered on during operation. The low-power microprocessor unit controls the network access of the wireless communication unit and completes the access to the on-site wireless network to realize the wireless communication function. The low-power microprocessor unit and the wireless communication unit realize the assembly and transmission of sensor data through serial port communication. At the same time, the low-power microprocessor unit receives data sent from the cloud through the wireless communication unit.

[0018] Beneficial effects: Compared with the prior art, the present invention provides a contactless low-power gas stove switch and a wireless communication device for monitoring fire, which has the following beneficial effects: the contactless low-power gas stove switch and the wireless communication device for monitoring fire, during the process of switching the gas stove on and off, the low-power microprocessor is triggered by the magnetic induction switch to learn the current switch state, and then the UV ultraviolet sensor is started to enter the monitoring flame in the high-fire mode state, and the low-power microprocessor will intermittently switch the power of the sensor and the wireless communication module on and off to send data; when the high fire is switched to the low-fire mode, the low-power microprocessor obtains the UV ultraviolet sensor data and then starts the remote thermopile temperature sensor to monitor the temperature of the flame in the low-fire mode, and at the same time, the sensor and the wireless communication module are intermittently switched on and off to send data; when the gas stove switch is in the on state and the fire is extinguished, the low-power microprocessor will power the buzzer and generate an alarm sound, and at the same time start the power of the wireless communication module for sending data, and after the alarm ends, the power of the sensor and the wireless communication module will be cut off at the same time to enter low power consumption;

[0019] Use traditional switch knob without changing user operating habits;

[0020] Simple and convenient installation, low cost, easy to promote and apply widely;

[0021] It uses low-power wireless communication, no wiring required, can transmit data in real time, and is easy to use;

[0022] Powered by easily purchased button batteries, it is simple and convenient to maintain and can be replaced by the user without the need for on-site service by professionals.

[0023] The overall low power consumption measures ensure that the battery can maintain a longer use time, reduce the use cost, and further improve practicality. The entire low power consumption gas stove switch and fire monitoring wireless communication device has a simple structure, easy operation, and better use effect than traditional methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The present invention is a schematic diagram of the overall structure of a non-contact low-power gas stove switch and a fire monitoring wireless communication device.

[0025] Figure 2 The present invention is a structural schematic diagram of a non-contact low-power consumption gas stove switch and a knob switch assembly in a fire monitoring wireless communication device.

[0026] Figure 3 The present invention is a schematic diagram of a top view of a contactless low-power gas stove switch and a knob switch assembly in a fire monitoring wireless communication device.

[0027] Figure 4 The present invention is a schematic diagram of the overall circuit principle of a non-contact low-power gas stove switch and a fire monitoring wireless communication device.

[0028] Figure 5 The present invention is a schematic diagram of a power supply circuit in a non-contact low-power gas stove switch and a fire monitoring wireless communication device.

[0029] Figure 6 The present invention is a schematic diagram of a non-contact low-power gas stove switch and a reed switch sensor circuit in a fire monitoring wireless communication device.

[0030] Figure 7 The present invention is a schematic diagram of a non-contact low-power gas stove switch and a UV ultraviolet sensor circuit in a fire monitoring wireless communication device.

[0031] Figure 8 The present invention is a circuit diagram of a remote thermopile temperature sensor in a non-contact low-power gas stove switch and a fire monitoring wireless communication device.

[0032] Fig. 9 The present invention is a schematic diagram of a buzzer circuit in a non-contact low-power gas stove switch and a fire monitoring wireless communication device.

[0033] Fig.10 The present invention is a schematic diagram of a wireless communication circuit in a non-contact low-power consumption gas stove switch and a fire monitoring wireless communication device.

[0034] In the figure: 1. Reed switch unit; 2. UV ultraviolet sensor unit; 3. Thermopile temperature sensor unit; 4. Buzzer unit; 5. Low-power microprocessor unit; 6. Power supply circuit; 7. Electronic switch unit; 8. Wireless communication unit; 9. Power supply battery; 10. Anti-reverse connection protection circuit; 11. Knob switch assembly; 12. Battery assembly; 13. Antenna; 14. MCU; 15. Wireless communication module; 16. Buzzer assembly; 17. UV ultraviolet sensor assembly; 18. Normally closed reed switch; 19. Thermopile temperature sensor assembly; 20. Center semicircular hole; 21. High fire mode; 22. Low fire mode; 23. Magnet assembly; 24. Household gas stove. DETAILED DESCRIPTION

[0035] The technical scheme of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments, but it will be understood by those skilled in the art that the following described embodiments are part of embodiments of the present invention, rather than all embodiments, and are only used to illustrate the present invention, and should not be considered as limiting the scope of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of the present invention. If specific conditions are not specified in the embodiments, they are carried out according to normal conditions or conditions recommended by the manufacturer. If the manufacturer is not specified in the reagents or instruments used, they are all conventional products that can be purchased commercially.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] like Figure 1-10As shown, a contactless low-power gas stove switch includes a knob switch assembly 11, and the knob switch assembly 11 is located at the switch position of a household gas stove 24, a magnet assembly 23 is arranged between the 6 o'clock position of the knob switch assembly 11 and the household gas stove 24, a battery assembly 12, an antenna 13, an MCU 14, a wireless communication module 15, a buzzer assembly 16, a UV ultraviolet sensor assembly 17, a normally closed reed switch 18, a thermopile temperature sensor assembly 19 and a central semicircular hole 20 are installed inside the knob switch assembly 11, the knob switch assembly 11 is divided into a high-fire mode 21 and a low-fire mode 22, and is installed using a traditional switch knob, which is simple and convenient to install and has low cost, low-power wireless communication, and can transmit monitoring data in real time, and is powered by a button battery, which is simple and convenient to replace and maintain, has low power consumption, and the battery can be used for a long time,

[0039] The purpose of the present invention is to monitor the gas usage of the elderly in real time and transmit data through a non-contact low-power gas stove switch and fire monitoring, aiming at the situation of elderly people living alone at home, so as to provide data support for evaluating the health status of elderly people living alone.

[0040] Furthermore, when the knob switch assembly 11 is ready to start firing, the normally closed reed switch 18 leaves the lower magnet assembly 23 and assumes a closed state, when the knob switch assembly 11 is turned to the high fire mode 21, the UV ultraviolet sensor assembly 17 starts working, and when the knob switch assembly 11 is turned to the low fire mode 22, the thermopile temperature sensor assembly 19 enters the working state, and when it is detected that the knob switch assembly 11 is not closed and there is no fire, the buzzer assembly 16 enters the working state, and the status data during this period will be sent to the receiving device end through the low-power microprocessor to control the wireless module.

[0041] A non-contact low-power gas stove fire monitoring wireless communication device comprises a reed switch unit 1, a UV ultraviolet sensor unit 2, a thermopile temperature sensor unit 3, a buzzer unit 4, a low-power microprocessor unit 5, a power supply circuit 6, an electronic switch unit 7, a wireless communication unit 8, a power supply battery 9 and an anti-reverse connection protection circuit 10. The low-power microprocessor unit 5 serves as a main control unit, and its sleep current is 1uA. The power supply circuit 6 provides power. When the low-power microprocessor unit 5 receives a signal from the reed switch unit 1, it immediately supplies power to the UV ultraviolet sensor unit 2 through the electronic switch unit 7 and reads the signal of the UV ultraviolet sensor unit 2 in real time. It analyzes whether it is currently in a high fire state through an algorithm. At the same time, the low-power microprocessor unit 5 The electronic switch unit 7 is controlled to turn on and off the power of the wireless communication unit 8 to send real-time data. When the low-power microprocessor unit 5 detects that the signal of the UV ultraviolet sensor unit 2 does not meet a certain condition, the low-power microprocessor unit 5 controls the electronic switch unit 7 to supply power to the thermopile temperature sensor unit 3 and read the real-time temperature. The algorithm is used to determine whether it is in a low-fire state or there is no flame. When the low-power microprocessor unit 5 determines that there is no flame and does not receive the shutdown signal of the reed switch unit 1, it will control the electronic switch unit 7 to supply power to the buzzer unit 4 and issue an alarm sound. At the same time, the current status data is controlled by the low-power microprocessor unit 5 to control the electronic switch unit 7 to turn on and off the power of the wireless communication unit 8 to send real-time data.

[0042] Furthermore, the power supply in the power supply circuit 6 uses two CR2450 power supply batteries 9. The power supply batteries 9 are powered by the electronic switch unit 7 after passing through the anti-reverse connection protection circuit 10. The anti-reverse connection protection circuit 10 protects the subsequent circuit. When the positive and negative poles of the power supply battery 9 are reversed, the anti-reverse connection protection circuit 10 will cut off the power supply to the subsequent circuit.

[0043] Furthermore, the reed switch unit 1 enters a closed state after leaving the magnet, and the signal is captured by the low-power microprocessor unit 5, which determines that the firing state has been entered and enters the next judgment logic.

[0044] Furthermore, the low-power microprocessor unit 5 controls the electronic switch unit 7 to supply power to the UV ultraviolet sensor unit 2 , and receives a signal from the UV ultraviolet sensor unit 2 at the same time.

[0045] Furthermore, the low-power microprocessor unit 5 controls the electronic switch unit 7 to supply power to the thermopile temperature sensor unit 3, and receives temperature data from the thermopile temperature sensor unit 3, and analyzes the current flame mode according to the current temperature combined with the algorithm.

[0046] Furthermore, the low-power microprocessor unit 5 controls the electronic switch unit 7 to supply power to the buzzer unit 4 and controls the alarm sound.

[0047] Furthermore, the wireless communication unit 8 is divided into three states: sleep, start, and run. Under the control of the low-power microprocessor unit 5, the wireless communication unit 8 is started and the running state lasts for a very short time. During the rest of the time period, the wireless communication unit 8 is in a sleep state and does not consume any electric energy from the power supply battery 9. The power supply circuit 6 supplies power to the wireless communication unit 8 through the electronic switch unit 7. Under the control of the low-power microprocessor unit 5, the wireless communication unit 8 is only powered on during operation. The low-power microprocessor unit 5 controls the access to the network of the wireless communication unit 8 to complete the access to the on-site wireless network to realize the wireless communication function. The low-power microprocessor unit 5 and the wireless communication unit 8 realize the assembly and transmission of sensor data through serial port communication. At the same time, the low-power microprocessor unit 5 receives data sent from the cloud through the wireless communication unit 8.

[0048] Working principle: The present invention comprises a reed switch unit 1, a UV ultraviolet sensor unit 2, a thermopile temperature sensor unit 3, a buzzer unit 4, a low-power microprocessor unit 5, a power supply circuit 6, an electronic switch unit 7, a wireless communication unit 8, a power supply battery 9, an anti-reverse connection protection circuit 10, a knob switch assembly 11, a battery assembly 12, an antenna 13, an MCU 14, a wireless communication module 15, a buzzer assembly 16, a UV ultraviolet sensor assembly 17, a normally closed reed switch 18, a thermopile temperature sensor assembly 19, a central semicircular hole 20, a high-fire mode 21, a low-fire mode 22, a magnet assembly 23, and a household gas stove 24. During the switching process of the gas stove, the low-power microprocessor is triggered by the magnetic induction switch. The low-power microprocessor will intermittently switch on and off the power of the sensor and the wireless communication module to send data. When the high fire is switched to the low fire mode, the low-power microprocessor will get the data from the UV sensor and start the remote thermopile temperature sensor to monitor the temperature of the flame in the low fire mode. At the same time, it will intermittently switch on and off the power of the sensor and the wireless communication module to send data. When the gas stove switch is on and the fire is off, the low-power microprocessor will power the buzzer and generate an alarm sound, and start the power of the wireless communication module to send data. After the alarm ends, the power of the sensor and the wireless communication module will be cut off at the same time to enter low power consumption.

[0049] The present invention first proposes a contactless low-power gas stove switch and fire monitoring device, which includes a power supply management circuit, a switch sensing circuit, a flame ultraviolet band monitoring circuit, a remote thermopile temperature sensor monitoring circuit, an alarm circuit, a wireless communication circuit, and a low-power microprocessor.

[0050] The power supply circuit is composed of a battery, a power supply reverse polarity protection, and an electronic switch; further, the power supply circuit output is connected to other circuit units through an electronic switch or directly to supply power to all other circuit units; the electronic switch control end is connected to a low-power processor; further, the low-power processor controls the on and off of the power supply to each circuit unit to achieve low power consumption of the circuit.

[0051] The switch sensing circuit is composed of a reed switch sensor and external magnetic materials; turning the switch causes the reed switch to output a specific signal under the action of magnetic force, and the output is connected to a low-power processor.

[0052] The flame ultraviolet band monitoring circuit is composed of a UV ultraviolet sensor. When the flame is in a high fire mode, the sensor can monitor the ultraviolet spectrum in the flame and output a specific signal. The output is connected to a low-power processor.

[0053] The remote thermopile temperature sensor monitoring circuit is composed of a remote thermopile temperature sensor. When the flame is in low-fire mode, the ultraviolet sensor cannot detect it. At this time, the remote thermopile temperature sensor can monitor the temperature of the remote flame and connect to the low-power processor based on the obtained temperature output.

[0054] The alarm circuit is that when the gas stove switch is in the on mode but there is no flame, the low-power processor controls the buzzer to sound an alarm.

[0055] The wireless communication circuit adopts an integrated module unit, and the low-power processor controls the on and off of the power supply of the wireless communication circuit. The serial port is used to transmit data between the wireless communication circuit and the low-power microprocessor. When wireless communication is further required, the low-power processor controls the electronic switch to power the wireless circuit, and maintains continuous power supply during wireless communication. Finally, after the wireless communication is completed, the low-power processor controls the electronic switch to cut off the power supply of the wireless circuit, and then the whole enters low power consumption to reduce power consumption.

[0056] As the core control element, a low-power microprocessor is used, which is an ultra-low-power microprocessor and is specially designed for low power consumption requirements. Furthermore, the low-power microprocessor controls the power supply management of the power-consuming unit, and connects or cuts off the power supply as needed to reduce power consumption. In the first step, the low-power microprocessor manages the acquisition of switch signals, and then determines that the UV ultraviolet sensor enters the working state, and then determines that the remote thermopile temperature sensor enters the working state according to the state of the UV ultraviolet sensor. At the same time, the buzzer product alarm signal is controlled during the monitoring process, and finally the low-power microprocessor manages the wireless communication interaction process to complete the wireless data interaction with the superior communication equipment.

[0057] It should be noted that, in this article, relational terms such as first and second (number one, number two), etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0058] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A contactless low-power gas stove switch, comprising a knob switch assembly (11), wherein the knob switch assembly (11) is located at the switch position of a household gas stove (24), characterized in that: A magnet assembly (23) is provided between the 6 o'clock position below the knob switch assembly (11) and the household gas stove (24); a battery assembly (12), an antenna (13), an MCU (14), a wireless communication module (15), a buzzer assembly (16), a UV sensor assembly (17), a normally closed reed switch (18), a thermopile temperature sensor assembly (19) and a central semicircular hole (20) are installed inside the knob switch assembly (11); and the knob switch assembly (11) is divided into a high-fire mode (21) and a low-fire mode (22).

2. The non-contact low-power gas stove switch according to claim 1, characterized in that: When the knob switch assembly (11) is ready to start the fire, the normally closed reed switch (18) leaves the lower magnet assembly (23) and presents a closed state. When the knob switch assembly (11) is switched to the high fire mode (21), the UV ultraviolet sensor assembly (17) starts working. When the knob switch assembly (11) is switched to the low fire mode (22), the thermopile temperature sensor assembly (19) enters the working state. When it is detected that the knob switch assembly (11) is not closed and is in the no-fire state, the buzzer assembly (16) enters the working state. During this period, the status data will be sent to the receiving device end through the low-power microprocessor-controlled wireless module.

3. A non-contact low-power gas stove fire monitoring wireless communication device, characterized by: The invention comprises a reed switch unit (1), a UV ultraviolet sensor unit (2), a thermopile temperature sensor unit (3), a buzzer unit (4), a low-power microprocessor unit (5), a power supply circuit (6), an electronic switch unit (7), a wireless communication unit (8), a power supply battery (9) and an anti-reverse connection protection circuit (10). The low-power microprocessor unit (5) serves as a main control unit and has a sleep current of 1uA. The power supply circuit (6) provides power. When the low-power microprocessor unit (5) receives a signal from the reed switch unit (1), it immediately supplies power to the UV ultraviolet sensor unit (2) through the electronic switch unit (7) and reads the signal of the UV ultraviolet sensor unit (2) in real time. It analyzes whether the current state is a high fire state through an algorithm. At the same time, the low-power microprocessor unit (5) controls the electronic switch unit (7) to The low-power microprocessor unit (7) switches on and off the power supply of the wireless communication unit (8) to transmit real-time data. When the low-power microprocessor unit (5) detects that the signal of the UV ultraviolet sensor unit (2) does not meet a certain condition, the low-power microprocessor unit (5) controls the electronic switch unit (7) to supply power to the thermopile temperature sensor unit (3) and reads the real-time temperature. The algorithm is used to determine whether the thermopile temperature sensor unit (3) is in a low-fire state or has no flame. When the low-power microprocessor unit (5) determines that there is no flame and does not receive the shutdown signal of the reed switch unit (1), the low-power microprocessor unit (5) controls the electronic switch unit (7) to supply power to the buzzer unit (4) and emit an alarm sound. At the same time, the current state data is transmitted in real time by controlling the electronic switch unit (7) to switch on and off the power supply of the wireless communication unit (8) through the low-power microprocessor unit (5).

4. A non-contact low-power gas stove fire monitoring wireless communication device according to claim 3, characterized in that: The power supply in the power supply circuit (6) is selected from two CR2450 power supply batteries (9). The power supply batteries (9) are supplied with power through the electronic switch unit (7) after passing through the anti-reverse polarity protection circuit (10). The anti-reverse polarity protection circuit (10) protects the subsequent circuit. When the positive and negative poles of the power supply batteries (9) are installed reversely, the anti-reverse polarity protection circuit (10) will cut off the power supply to the subsequent circuit.

5. The non-contact low-power gas stove fire monitoring wireless communication device according to claim 3, characterized in that: The reed switch unit (1) enters a closed state after leaving the magnet, and the signal is captured by the low-power microprocessor unit (5). The low-power microprocessor unit (5) determines that the firing state has been entered and enters the next judgment logic.

6. The non-contact low-power gas stove fire monitoring wireless communication device according to claim 3, characterized in that: The low-power microprocessor unit (5) controls the electronic switch unit (7) to supply power to the UV ultraviolet sensor unit (2), and simultaneously receives a signal from the UV ultraviolet sensor unit (2).

7. The non-contact low-power gas stove fire monitoring wireless communication device according to claim 3, characterized in that: The low-power microprocessor unit (5) controls the electronic switch unit (7) to supply power to the thermopile temperature sensor unit (3), and simultaneously receives temperature data from the thermopile temperature sensor unit (3), and analyzes the current flame mode based on the current temperature in combination with an algorithm.

8. The non-contact low-power gas stove fire monitoring wireless communication device according to claim 3, characterized in that: The low-power microprocessor unit (5) controls the electronic switch unit (7) to supply power to the buzzer unit (4) and controls the alarm sound.

9. The non-contact low-power gas stove fire monitoring wireless communication device according to claim 3, characterized in that: The wireless communication unit (8) is divided into three states: dormancy, startup, and operation. Under the control of the low-power microprocessor unit (5), the wireless communication unit (8) is started. The duration of the two operation states is extremely short. During the remaining time period, the wireless communication unit (8) is in dormancy and does not consume the power of the power supply battery (9). The power supply circuit (6) supplies power to the wireless communication unit (8) through the electronic switch unit (7). Under the control of the low-power microprocessor unit (5), the wireless communication unit (8) is only powered on during operation. The low-power microprocessor unit (5) controls the access of the wireless communication unit (8) to the network and completes the access to the on-site wireless network to realize the wireless communication function. The low-power microprocessor unit (5) and the wireless communication unit (8) realize the assembly and transmission of sensor data through serial communication. At the same time, the low-power microprocessor unit (5) receives data sent from the cloud through the wireless communication unit (8).

Images