Gas detection system of range hood

Abstract

The gas detection system comprises a range hood body, a plurality of gas sensors, a main circuit board and an auxiliary circuit board, the main circuit board comprises a wireless communication module and a first main control module, and the auxiliary circuit board comprises a second main control module and a plurality of first signal processing modules. The first main control module is in communication connection with the second main control module, the first main control module is connected with the wireless communication module, the second main control module is connected with the first signal processing module, and the gas sensor is connected with the first signal processing module. According to the technical scheme, the gas sensor is installed at the outer end of the range hood body, the gas sensor is used for detecting the gas concentration of the kitchen space, and the first signal processing module is used for carrying out clutter filtering processing on signals transmitted to the second main control module by the gas sensor, so that the detection accuracy of the gas concentration of the kitchen space is improved; and the function of detecting the gas concentration in the kitchen space by the range hood is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic circuit technical field more specifically, the utility model relates to a gas detection system of range hood. BACKGROUND

[0002] With the improvement of people's living standards and the emphasis on safety, kitchen safety problems are increasingly concerned. Gas leakage is one of the common safety hazards in the kitchen, which may cause fire, explosion and poisoning of personnel and other serious consequences.

[0003] The current household will install the range hood in the kitchen to use its oil fume in the kitchen space during the cooking process of the household. The current market only has the conventional oil fume suction function, and cannot detect the gas concentration in the kitchen space. UTILITY MODEL CONTENT

[0004] To solve the above technical problems, the purpose of the utility model is to provide a gas detection system of range hood.

[0005] The utility model solves the technical scheme that adopts:

[0006] A gas detection system of range hood, including range hood body, several gas sensors, main circuit board and auxiliary circuit board, the main circuit board includes wireless communication module and first main control module, the auxiliary circuit board includes second main control module and several first signal processing modules, the gas sensor is installed on the surface of the range hood body, the number of the gas sensor is consistent with the number of the first signal processing module, the first main control module is connected with the second main control module, the first main control module is connected with the wireless communication module, the second main control module is connected with each first signal processing module respectively, each gas sensor is connected with each first signal processing module one by one.

[0007] As a further improvement of the above technical scheme, the power module is arranged on the power board, and the power module is connected with the wireless communication module, the first main control module, the second main control module, the first signal processing module and the gas sensor respectively.

[0008] As a further improvement of the above technical scheme, the power module includes a power chip, resistors R1, R2, R3, capacitors C1, C2, C3, C4, C5, an inductor L1, an input port and an output port, and the power chip is provided with an input end, a bootstrap end, a driving end and a feedback end.

[0009] The input end of the power supply chip is connected with the input port and one end of the capacitor C1 respectively, the other end of the capacitor C1 is connected with the ground end, the bootstrap end of the power supply chip is connected with the drive end of the power supply chip through the resistor R1 and the capacitor C2 in sequence, the drive end of the power supply chip is connected with one end of the inductor L1, the other end of the inductor L1 is connected with the ground end through the capacitor C3 and the capacitor C4 in sequence, the capacitor C3 is connected with the resistor R2 in parallel, the capacitor C4 is connected with the resistor R3 in parallel, the feedback end of the power supply chip is connected at the connection point of the capacitor C3 and the capacitor C4, the output port is connected at the connection point of the inductor L1 and the capacitor C3, one end of the capacitor C5 is connected at the connection point of the inductor L1 and the capacitor C3, the other end of the capacitor C5 is connected with the ground end.

[0010] As a further improvement of the above technical solution, the first signal processing module includes a first sensor port, a switch tube Q1, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a capacitor C6, a capacitor C7 and a capacitor C8, the first sensor port is configured with a power connection end, a ground connection end, a receiving end and a sending end, the first sensor port is connected with the gas sensor, the second main control module is connected with the gate of the switch tube Q1, the source of the switch tube Q1 is connected with the power supply module, the drain of the switch tube Q1 is connected with the power connection end of the first sensor port through the resistor R4, the ground connection end of the first sensor port is connected with the ground end, one end of the capacitor C6 is connected with the power connection end of the first sensor port, the other end of the capacitor C6 is connected with the ground connection end of the first sensor port, the sending end of the first sensor port is connected with one end of the resistor R5 and one end of the capacitor C7 respectively, the other end of the capacitor C7 is connected with the ground end, the other end of the resistor R5 is connected with the second main control module, the receiving end of the first sensor port is connected with one end of the resistor R7, one end of the capacitor C8 and the second main control module through the resistor R6 respectively, the other end of the capacitor C8 is connected with the ground end, the other end of the resistor R7 is connected with the power supply module.

[0011] As a further improvement of the above technical solution, the surface of the range hood body is further provided with a human body induction sensor, the secondary circuit board further includes a second signal processing module, the power supply module is connected with the human body induction sensor and the second signal processing module respectively, the second main control module is connected with the second signal processing module, and the second signal processing module is connected with the human body induction sensor.

[0012] As a further improvement of the above technical solution, the second signal processing module comprises a second sensor port, a switch tube Q2, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a capacitor C9, a capacitor C10 and a capacitor C11, the second sensor port is provided with a power connection end, a ground connection end, a receiving end and a sending end, the second sensor port is connected with the human body induction sensor, the second main control module is connected with the gate of the switch tube Q2, the source of the switch tube Q2 is connected with the power module, the drain of the switch tube Q2 is connected with the power connection end of the second sensor port through the resistor R8, the ground connection end of the second sensor port is connected with the ground end, one end of the capacitor C9 is connected with the power connection end of the second sensor port, the other end of the capacitor C9 is connected with the ground connection end of the second sensor port, the sending end of the second sensor port is connected with one end of the resistor R9 and one end of the capacitor C10 respectively, the other end of the capacitor C10 is connected with the ground end, the other end of the resistor R9 is connected with the second main control module, the receiving end of the second sensor port is connected with one end of the resistor R11, one end of the capacitor C11 and the second main control module through the resistor R10 respectively, the other end of the capacitor C11 is connected with the ground end, and the other end of the resistor R11 is connected with the power module.

[0013] The oil smoke machine has the advantages that the gas sensor is installed at the outer end of the oil smoke machine body, the gas concentration of the kitchen space is detected by the gas sensor, the signal transmitted from the gas sensor to the second main control module is subjected to clutter filtering by the first signal processing module, the accuracy of the gas concentration detection of the kitchen space is improved, and the gas concentration detection function of the oil smoke machine in the kitchen space is realized. BRIEF DESCRIPTION OF DRAWINGS

[0014] The utility model is further explained and described below in combination with the description and specific embodiment of the drawings.

[0015] Fig. 1 It is the circuit module frame diagram in the utility model;

[0016] Fig. 2 It is the circuit diagram of the power module in the utility model;

[0017] Fig. 3 It is the circuit diagram of the first signal processing module in the utility model;

[0018] Fig. 4 It is the circuit diagram of the second signal processing module in the utility model. DETAILED DESCRIPTION

[0019] The detailed embodiments of the utility model will be described in this part, the preferred embodiment of the utility model is shown in the drawings, the role of the drawings is to supplement the description of the written part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0020] In the description of the utility model, it needs to be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right and the like, is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.

[0021] In the description of the utility model, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than and the like are not included in the number, above, below and the like are included in the number.If it is described to the first, the second is only used for distinguishing technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0022] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installation and connection should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0023] Referring to Figs. 1 to 4 , the application discloses a gas detection system of an extractor hood, which comprises an extractor hood body, a plurality of gas sensors, a human body induction sensor, a main circuit board and a secondary circuit board, the main circuit board comprises a wireless communication module and a first main control module, the secondary circuit board comprises a second main control module, a plurality of first signal processing modules and a second signal processing module, the gas sensors and the human body induction sensor are installed on the surface of the extractor hood body, the number of the gas sensors is consistent with the number of the first signal processing modules, the first main control module is in communication connection with the second main control module, the first main control module is connected with the wireless communication module, the second main control module is connected with each first signal processing module and the second signal processing module respectively, each gas sensor is connected with each first signal processing module one by one, and the human body induction sensor is connected with the second signal processing module.

[0024] Specifically, the gas sensor and the human body sensing sensor are installed at the outer end of the range hood body in the embodiment, the gas sensor is used to detect the gas concentration in the kitchen space, the human body sensing sensor is used to detect whether there is a person in the kitchen space, the first signal processing module is used to filter the signal transmitted by the gas sensor to the second main control module, and the second signal processing module is used to filter the signal transmitted by the human body sensing sensor to the second main control module, so as to improve the accuracy of the detection of related parameters and realize the gas concentration detection function of the range hood in the kitchen space.

[0025] In actual application, the embodiment is provided with two or more gas sensors and first signal processing modules, the plurality of gas sensors are respectively installed at different positions of the outer end of the range hood, so as to accurately detect the gas concentration in different directions of the kitchen space, and the safety of using gas in the kitchen is greatly improved.

[0026] Further, as a preferred embodiment, the embodiment further includes a power panel provided with a power module, the power module is connected with the wireless communication module, the first main control module, the second main control module, the first signal processing module, the second signal processing module, the gas sensor and the human body sensing sensor.

[0027] Preferably, in the embodiment, the power module includes a power chip, a resistor R1, a resistor R2, a resistor R3, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, an inductor L1, an input port and an output port, the power chip is provided with an input end, a bootstrap end, a driving end and a feedback end.

[0028] The input end of the power chip is connected with the input port and one end of the capacitor C1, the other end of the capacitor C1 is connected with the ground end, the bootstrap end of the power chip is connected with the driving end of the power chip through the resistor R1 and the capacitor C2 in sequence, the driving end of the power chip is connected with one end of the inductor L1, the other end of the inductor L1 is connected with the ground end through the capacitor C3 and the capacitor C4 in sequence, the capacitor C3 is connected with the resistor R2 in parallel, the capacitor C4 is connected with the resistor R3 in parallel, the feedback end of the power chip is connected at the connection point of the capacitor C3 and the capacitor C4, the output port is connected at the connection point of the inductor L1 and the capacitor C3, one end of the capacitor C5 is connected at the connection point of the inductor L1 and the capacitor C3, and the other end of the capacitor C5 is connected with the ground end.

[0029] Further as a preferred implementation, in this embodiment, the first signal processing module comprises a first sensor port, a switch tube Q1, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a capacitor C6, a capacitor C7 and a capacitor C8, the first sensor port is configured with a power connection end, a ground end, a receiving end and a sending end, the first sensor port is connected with the gas sensor, the second main control module is connected with the gate of the switch tube Q1, the source of the switch tube Q1 is connected with the power module, the drain of the switch tube Q1 is connected with the power connection end of the first sensor port through the resistor R4, the ground end of the first sensor port is connected with the ground end, one end of the capacitor C6 is connected with the power connection end of the first sensor port, the other end of the capacitor C6 is connected with the ground end of the first sensor port, the sending end of the first sensor port is connected with one end of the resistor R5 and one end of the capacitor C7 respectively, the other end of the capacitor C7 is connected with the ground end, the other end of the resistor R5 is connected with the second main control module, the receiving end of the first sensor port is connected with one end of the resistor R7, one end of the capacitor C8 and the second main control module through the resistor R6 respectively, the other end of the capacitor C8 is connected with the ground end, the other end of the resistor R7 is connected with the power module.

[0030] Further as a preferred implementation, in this embodiment, the second signal processing module comprises a second sensor port, a switch tube Q2, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a capacitor C9, a capacitor C10 and a capacitor C11, the second sensor port is configured with a power connection end, a ground end, a receiving end and a sending end, the second sensor port is connected with the human body induction sensor, the second main control module is connected with the gate of the switch tube Q2, the source of the switch tube Q2 is connected with the power module, the drain of the switch tube Q2 is connected with the power connection end of the second sensor port through the resistor R8, the ground end of the second sensor port is connected with the ground end, one end of the capacitor C9 is connected with the power connection end of the second sensor port, the other end of the capacitor C9 is connected with the ground end of the second sensor port, the sending end of the second sensor port is connected with one end of the resistor R9 and one end of the capacitor C10 respectively, the other end of the capacitor C10 is connected with the ground end, the other end of the resistor R9 is connected with the second main control module, the receiving end of the second sensor port is connected with one end of the resistor R11, one end of the capacitor C11 and the second main control module through the resistor R10 respectively, the other end of the capacitor C11 is connected with the ground end, the other end of the resistor R11 is connected with the power module.

[0031] The above are only preferred embodiments of the present application, and do not limit the patent range of the present application, and any equivalent structural transformation, direct or indirect application in other related technical fields under the concept of the present application, using the content of the present application specification and drawings are included in the patent protection range of the present application.

Claims

1. A gas detection system for a range hood, the system comprising: The gas stove comprises a gas stove body, a plurality of gas sensors, a main circuit board and a secondary circuit board, the main circuit board comprises a wireless communication module and a first main control module, the secondary circuit board comprises a second main control module and a plurality of first signal processing modules, the gas sensors are installed on the surface of the gas stove body, the number of the gas sensors is consistent with the number of the first signal processing modules, the first main control module is in communication connection with the second main control module, the first main control module is connected with the wireless communication module, the second main control module is connected with each first signal processing module respectively, and each gas sensor is connected with each first signal processing module in one-to-one correspondence.

2. A gas detection system for a range hood as defined in claim 1, wherein: The power supply board is further provided with a power supply module, and the power supply module is connected with the wireless communication module, the first main control module, the second main control module, the first signal processing module and the gas sensor respectively.

3. A gas detection system for a range hood as defined in claim 2, wherein: The power supply module comprises a power supply chip, resistors R1, R2 and R3, capacitors C1, C2, C3, C4 and C5, an inductor L1, an input port and an output port, and the power supply chip is provided with an input end, a bootstrap end, a driving end and a feedback end. The input end of the power supply chip is connected with the input port and one end of the capacitor C1 respectively, the other end of the capacitor C1 is connected with a ground end, the bootstrap end of the power supply chip is connected with the driving end of the power supply chip through the resistor R1 and the capacitor C2 in sequence, the driving end of the power supply chip is connected with one end of the inductor L1, the other end of the inductor L1 is connected with the ground end through the capacitor C3 and the capacitor C4 in sequence, the capacitor C3 is connected with the resistor R2 in parallel, the capacitor C4 is connected with the resistor R3 in parallel, the feedback end of the power supply chip is connected at the connection point of the capacitor C3 and the capacitor C4, the output port is connected at the connection point of the inductor L1 and the capacitor C3, one end of the capacitor C5 is connected at the connection point of the inductor L1 and the capacitor C3, and the other end of the capacitor C5 is connected with the ground end.

4. A gas detection system for a range hood as defined in claim 2, wherein: The first signal processing module comprises a first sensor port, a switch tube Q1, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a capacitor C6, a capacitor C7 and a capacitor C8, the first sensor port is provided with a power connection end, a ground connection end, a receiving end and a sending end, the first sensor port is connected with the gas sensor, the second main control module is connected with the gate of the switch tube Q1, the source of the switch tube Q1 is connected with the power module, the drain of the switch tube Q1 is connected with the power connection end of the first sensor port through the resistor R4, the ground connection end of the first sensor port is connected with the ground end, one end of the capacitor C6 is connected with the power connection end of the first sensor port, the other end of the capacitor C6 is connected with the ground connection end of the first sensor port, the sending end of the first sensor port is connected with one end of the resistor R5 and one end of the capacitor C7 respectively, the other end of the capacitor C7 is connected with the ground end, the other end of the resistor R5 is connected with the second main control module, the receiving end of the first sensor port is connected with one end of the resistor R7, one end of the capacitor C8 and the second main control module through the resistor R6 respectively, the other end of the capacitor C8 is connected with the ground end, the other end of the resistor R7 is connected with the power module.

5. A gas detection system for a range hood as defined in claim 2, wherein: The surface of the range hood body is further provided with a human body induction sensor, the secondary circuit board further comprises a second signal processing module, the power module is connected with the human body induction sensor and the second signal processing module respectively, the second main control module is connected with the second signal processing module, and the second signal processing module is connected with the human body induction sensor.

6. A gas detection system for a range hood as defined in claim 5, wherein: The second signal processing module comprises a second sensor port, a switch tube Q2, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a capacitor C9, a capacitor C10 and a capacitor C11, the second sensor port is provided with a power connection end, a ground connection end, a receiving end and a sending end, the second sensor port is connected with the human body induction sensor, the second main control module is connected with the gate of the switch tube Q2, the source of the switch tube Q2 is connected with the power module, the drain of the switch tube Q2 is connected with the power connection end of the second sensor port through the resistor R8, the ground connection end of the second sensor port is connected with the ground end, one end of the capacitor C9 is connected with the power connection end of the second sensor port, the other end of the capacitor C9 is connected with the ground connection end of the second sensor port, the sending end of the second sensor port is connected with one end of the resistor R9 and one end of the capacitor C10 respectively, the other end of the capacitor C10 is connected with the ground end, the other end of the resistor R9 is connected with the second main control module, the receiving end of the second sensor port is connected with one end of the resistor R11, one end of the capacitor C11 and the second main control module through the resistor R10 respectively, the other end of the capacitor C11 is connected with the ground end, and the other end of the resistor R11 is connected with the power module.

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