A control system for a gas stove

Abstract

This utility model discloses a control system for a gas stove, including a main processing unit and a human-machine interface unit. The human-machine interface unit includes a first processor, a first communication interface module, a touch button module, a digital display module, and an angle detection module. The main processing unit includes a second processor, a power supply module, a second communication interface module, a valve drive module, a ignition switch detection module, and a pulse ignition module. The first communication interface module of the human-machine interface unit is electrically connected to the second communication interface module of the main processing unit. This technical solution divides the gas stove control system into a main processing unit and a human-machine interface unit. The angle detection module in the human-machine interface unit detects the rotation angle of the knob controlling the flame intensity in the gas stove, facilitating precise control of the flame intensity by the cook and effectively improving the cooking results.

Description

Technical Field

[0001] This utility model relates to the field of electronic circuit technology, and more specifically to a control system for a gas stove. Background Technology

[0002] To allow cooks to prepare multiple dishes simultaneously, stove designers incorporate multiple burner heads into the main body of the stove. To facilitate heat control of each burner head, designers also include knobs on the stove body to adjust the heat output.

[0003] In existing technology, the knobs on the stove heads are mechanically controlled for heat output, which cannot achieve precise control of the heat output of each stove head, and thus can easily affect the taste of the cooked dishes. Utility Model Content

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a control system for a gas stove.

[0005] The technical solution adopted by this utility model to solve the problem is:

[0006] A control system for a gas stove includes a main processing unit and a human-machine interaction unit, wherein the main processing unit is communicatively connected to the human-machine interaction unit.

[0007] The human-computer interaction unit includes a first processor, a first communication interface module, a touch button module, a digital display module, and an angle detection module. The first processor is connected to the first communication interface module, the touch button module, the digital display module, and the angle detection module.

[0008] The main processing unit includes a second processor, a power module, a second communication interface module, a valve drive module, a ignition switch detection module, and a pulse ignition module. The second processor is connected to the second communication interface module, the valve drive module, the ignition switch detection module, and the pulse ignition module, respectively. The power module is connected to the second processor, the second communication interface module, the valve drive module, the ignition switch detection module, and the pulse ignition module, respectively.

[0009] The first communication interface module of the human-computer interaction unit is electrically connected to the second communication interface module of the main processing unit.

[0010] As a further improvement to the above technical solution, the angle detection module includes a sensor port for connecting to an angle sensor, resistors R1 and R2, and capacitor C1. The sensor port is configured with a data terminal, and the first processor is configured with a first connection terminal. The sensor port is used to connect to an external angle sensor, which is used to detect the rotation angle of the knob of the gas stove.

[0011] The data terminal of the sensor port is connected to the first connection terminal of the first processor through the resistor R1, and the data terminal of the sensor port is connected to the ground terminal through the resistor R2. The capacitor C1 is connected in parallel with the resistor R2.

[0012] As a further improvement to the above technical solution, the valve drive module includes a valve port, a PNP transistor Q1, an NPN transistor Q2, a PNP transistor Q3, a switching transistor Q4, a diode D1, an inductor L1, a capacitor C2, a capacitor C3, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, and a resistor R15. The second processor is configured with a first connection terminal, a second connection terminal, a third connection terminal, and a fourth connection terminal.

[0013] The first connection terminal of the second processor is connected to the base of transistor Q1 through resistor R3. The emitter of transistor Q1 is connected to the power supply terminal. The two ends of resistor R4 are connected to the base and emitter of transistor Q1 respectively. The collector of transistor Q1 is connected to the base of transistor Q2 through resistor R5. The collector of transistor Q2 is connected to the second connection terminal of the second processor through resistors R7 and R8 respectively. The second connection terminal of the second processor is connected to ground through capacitor C2. The two ends of resistor R6 are connected to the base and emitter of transistor Q2 respectively. The third connection terminal of the second processor is connected to the base of transistor Q3 through resistor R9. The emitter of transistor Q3 is connected to the power supply terminal. The two ends of resistor R10 are connected to the base and emitter of transistor Q3 respectively. The collector of transistor Q3... The second processor's fourth connection terminal is connected to the gate of the switching transistor Q3 through the resistor R11. The other end of the valve port is connected to ground. One end of the resistor R12 is connected to the emitter of the transistor Q3, and the other end of the resistor R12 is connected to the junction of the resistors R7 and R8, and also to the junction of the resistor R11 and the valve port. The emitter of the transistor Q2 is connected to ground through the resistor R15. The capacitor C3 is connected in parallel with the resistor R15. The emitter of the transistor Q2 is connected to the anode of the diode D1. The cathode of the diode D1 is connected to ground through the inductor L1. The fourth connection terminal of the second processor is connected to the gate of the switching transistor Q4 through the resistor R13. The drain of the switching transistor Q4 is connected to the cathode of the diode D1. The source of the switching transistor Q4 is connected to the power supply terminal. The two ends of the resistor R14 are connected to the gate and source of the switching transistor Q4 respectively.

[0014] As a further improvement to the above technical solution, the point switch detection module includes a switch port, resistor R16, resistor R17, capacitor C4, and Zener diode D2, and the second processor is configured with a fifth connection terminal.

[0015] The fifth connection terminal of the second processor is connected to the negative terminal of the Zener diode D2 through the resistor R17. The positive terminal of the Zener diode D2 is connected to ground. The negative terminal of the Zener diode D2 is connected to the power supply terminal through the resistor R16. The capacitor C4 is connected in parallel with the Zener diode D2. The two ends of the switch port are connected to the positive and negative terminals of the Zener diode D2 respectively. The negative terminal of the Zener diode D2 is connected to the power supply terminal.

[0016] As a further improvement to the above technical solution, the pulse ignition module includes an ignition port, a driver chip of model AP2406, resistors R18, R19, R20, R21, and R22, capacitors C5, C6, and C7, an inductor L2, and a PNP transistor Q5. The driver chip is configured with an input terminal, an output terminal, a feedback terminal, and an enable terminal, and the second processor is configured with a sixth connection terminal.

[0017] The sixth connection terminal of the second processor is connected to the base of transistor Q5 through resistor R18. The switching port is connected to the base of transistor Q5 through resistor R19. The emitter of transistor Q5 is connected to the power supply terminal. The collector of transistor Q5 is connected to ground through capacitor C5. The two ends of resistor R20 are connected to the emitter and collector of transistor Q5 respectively. The collector of transistor Q5 is connected to the input terminal and the enable terminal of the driver chip respectively. The output terminal of the driver chip is connected to the ignition port through inductor L2. One end of capacitor C6 is connected to the connection terminal of inductor L2 and the ignition port. The other end of capacitor C6 is connected to the feedback terminal of the driver chip. Resistor R21 is connected in parallel with capacitor C6. The feedback terminal of the driver chip is connected to ground through resistor R22. One end of capacitor C7 is connected to the connection point of inductor L2 and capacitor C6. The other end of capacitor C7 is connected to ground.

[0018] As a further improvement to the above technical solution, the main processing unit further includes a zero-crossing detection module, and the second processor is connected to the zero-crossing detection module.

[0019] As a further improvement to the above technical solution, the zero-crossing detection module includes an optocoupler U1, a transistor Q6, resistors R23, R24, R25, R26, R27, and R28, capacitors C8, C9, and C10, the second processor is configured with a seventh connection terminal, and the power supply module is configured with a rectifier output terminal, a first power supply terminal, and a second power supply terminal.

[0020] The rectified output terminal of the power module is connected to ground successively through resistors R23 and R24. Capacitor C8 is connected in parallel with resistor R24. The base of transistor Q6 is connected to the junction of resistors R23 and R24. The emitter of transistor Q6 is connected to ground. The collector of transistor Q6 is connected to the cathode of optocoupler U1. The anode of optocoupler U1 is connected to the first power supply terminal of the power module successively through resistors R26 and R25. One end of capacitor C9 is connected to the emitter of transistor Q6, and the other end of capacitor C9 is connected to the junction of resistors R26 and R25. The emitter of optocoupler U1 is connected to ground. The collector of optocoupler U1 is connected to the second power supply terminal of the power module through resistor R27. The collector of optocoupler U1 is connected to the seventh connection terminal of the second processor through resistor R28. The two ends of capacitor C10 are connected to the collector and emitter of optocoupler U1 respectively.

[0021] As a further improvement to the above technical solution, the main processing unit further includes a voltage comparison module, which includes a data selector, a reference voltage source, and a comparator. The data selector is configured with multiple data terminals, address terminals, and output terminals. The second processor is configured with an eighth connection terminal and a ninth connection terminal. Multiple valve drive modules are configured, and each valve drive module is connected to a corresponding data terminal of the data selector. The eighth connection terminal of the second processor is connected to the address terminal of the data selector. The output terminal of the data selector and the reference voltage source are respectively connected to the input terminal of the comparator. The output terminal of the comparator is connected to the ninth connection terminal of the second processor.

[0022] The beneficial effects of this utility model are as follows: In this technical solution, the gas stove control system is divided into a main processing unit and a human-computer interaction unit. The human-computer interaction unit uses an angle detection module to detect the rotation angle of the knob that controls the fire level in the gas stove, which facilitates the cook to control the fire level of the gas stove more accurately and effectively improves the cooking effect of the dishes. Attached Figure Description

[0023] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0024] Figure 1 This is a system framework diagram of this utility model;

[0025] Figure 2 This is the circuit diagram of the angle detection module in this utility model;

[0026] Figure 3This is the circuit diagram of the valve drive module in this utility model;

[0027] Figure 4 This is the circuit diagram of the midpoint switch detection module of this utility model;

[0028] Figure 5 This is the circuit schematic diagram of the pulse ignition module in this utility model;

[0029] Figure 6 This is the circuit schematic diagram of the zero-crossing detection module in this utility model;

[0030] Figure 7 This is a framework diagram of the voltage comparison module in this utility model. Detailed Implementation

[0031] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0032] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0034] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0035] Reference Figures 1 to 7 This utility model discloses a control system for a gas stove. In its first embodiment, it includes a main processing unit and a human-machine interaction unit, wherein the main processing unit and the human-machine interaction unit are communicatively connected.

[0036] The human-computer interaction unit includes a first processor, a first communication interface module, a touch button module, a digital display module, and an angle detection module. The first processor is connected to the first communication interface module, the touch button module, the digital display module, and the angle detection module.

[0037] The main processing unit includes a second processor, a power module, a second communication interface module, a valve drive module, a ignition switch detection module, and a pulse ignition module. The second processor is connected to the second communication interface module, the valve drive module, the ignition switch detection module, and the pulse ignition module, respectively. The power module is connected to the second processor, the second communication interface module, the valve drive module, the ignition switch detection module, and the pulse ignition module, respectively.

[0038] The first communication interface module of the human-computer interaction unit is electrically connected to the second communication interface module of the main processing unit.

[0039] Specifically, in this embodiment, the gas stove control system is divided into a main processing unit and a human-computer interaction unit. The human-computer interaction unit uses the angle detection module to detect the rotation angle of the knob that controls the fire level in the gas stove, which facilitates the cook's accurate control of the fire level and effectively improves the cooking effect of the dishes.

[0040] As a further preferred embodiment, in this embodiment, the angle detection module includes a sensor port for connecting to an angle sensor, resistors R1 and R2, and capacitor C1. The sensor port is configured with a data terminal, and the first processor is configured with a first connection terminal. The sensor port is used to connect to an external angle sensor, which is used to detect the rotation angle of the knob of the gas stove.

[0041] The data terminal of the sensor port is connected to the first connection terminal of the first processor through the resistor R1, and the data terminal of the sensor port is connected to the ground terminal through the resistor R2. The capacitor C1 is connected in parallel with the resistor R2.

[0042] As a further preferred embodiment, in this embodiment, the valve drive module includes a valve port, a PNP transistor Q1, an NPN transistor Q2, a PNP transistor Q3, a switching transistor Q4, a diode D1, an inductor L1, a capacitor C2, a capacitor C3, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, and a resistor R15, and the second processor is configured with a first connection terminal, a second connection terminal, a third connection terminal, and a fourth connection terminal;

[0043] The first connection terminal of the second processor is connected to the base of transistor Q1 through resistor R3. The emitter of transistor Q1 is connected to the power supply terminal. The two ends of resistor R4 are connected to the base and emitter of transistor Q1 respectively. The collector of transistor Q1 is connected to the base of transistor Q2 through resistor R5. The collector of transistor Q2 is connected to the second connection terminal of the second processor through resistors R7 and R8 respectively. The second connection terminal of the second processor is connected to ground through capacitor C2. The two ends of resistor R6 are connected to the base and emitter of transistor Q2 respectively. The third connection terminal of the second processor is connected to the base of transistor Q3 through resistor R9. The emitter of transistor Q3 is connected to the power supply terminal. The two ends of resistor R10 are connected to the base and emitter of transistor Q3 respectively. The collector of transistor Q3... The second processor's fourth connection terminal is connected to the gate of the switching transistor Q3 through the resistor R11. The other end of the valve port is connected to ground. One end of the resistor R12 is connected to the emitter of the transistor Q3, and the other end of the resistor R12 is connected to the junction of the resistors R7 and R8, and also to the junction of the resistor R11 and the valve port. The emitter of the transistor Q2 is connected to ground through the resistor R15. The capacitor C3 is connected in parallel with the resistor R15. The emitter of the transistor Q2 is connected to the anode of the diode D1. The cathode of the diode D1 is connected to ground through the inductor L1. The fourth connection terminal of the second processor is connected to the gate of the switching transistor Q4 through the resistor R13. The drain of the switching transistor Q4 is connected to the cathode of the diode D1. The source of the switching transistor Q4 is connected to the power supply terminal. The two ends of the resistor R14 are connected to the gate and source of the switching transistor Q4 respectively.

[0044] As a further preferred embodiment, in this embodiment, the point switch detection module includes a switch port, resistor R16, resistor R17, capacitor C4, and Zener diode D2, and the second processor is configured with a fifth connection terminal;

[0045] The fifth connection terminal of the second processor is connected to the negative terminal of the Zener diode D2 through the resistor R17. The positive terminal of the Zener diode D2 is connected to ground. The negative terminal of the Zener diode D2 is connected to the power supply terminal through the resistor R16. The capacitor C4 is connected in parallel with the Zener diode D2. The two ends of the switch port are connected to the positive and negative terminals of the Zener diode D2 respectively. The negative terminal of the Zener diode D2 is connected to the power supply terminal.

[0046] As a further preferred embodiment, in this embodiment, the pulse ignition module includes an ignition port, a driver chip of model AP2406, resistors R18, R19, R20, R21, and R22, capacitors C5, C6, and C7, an inductor L2, and a PNP transistor Q5. The driver chip is configured with an input terminal, an output terminal, a feedback terminal, and an enable terminal, and the second processor is configured with a sixth connection terminal.

[0047] The sixth connection terminal of the second processor is connected to the base of transistor Q5 through resistor R18. The switching port is connected to the base of transistor Q5 through resistor R19. The emitter of transistor Q5 is connected to the power supply terminal. The collector of transistor Q5 is connected to ground through capacitor C5. The two ends of resistor R20 are connected to the emitter and collector of transistor Q5 respectively. The collector of transistor Q5 is connected to the input terminal and the enable terminal of the driver chip respectively. The output terminal of the driver chip is connected to the ignition port through inductor L2. One end of capacitor C6 is connected to the connection terminal of inductor L2 and the ignition port. The other end of capacitor C6 is connected to the feedback terminal of the driver chip. Resistor R21 is connected in parallel with capacitor C6. The feedback terminal of the driver chip is connected to ground through resistor R22. One end of capacitor C7 is connected to the connection point of inductor L2 and capacitor C6. The other end of capacitor C7 is connected to ground.

[0048] As a further preferred embodiment, in this embodiment, the main processing unit further includes a zero-crossing detection module, and the second processor is connected to the zero-crossing detection module.

[0049] As a further preferred embodiment, in this embodiment, the zero-crossing detection module includes an optocoupler U1, a transistor Q6, resistors R23, R24, R25, R26, R27, and R28, capacitors C8, C9, and C10, the second processor is configured with a seventh connection terminal, and the power supply module is configured with a rectifier output terminal, a first power supply terminal, and a second power supply terminal.

[0050] The rectified output terminal of the power module is connected to ground successively through resistors R23 and R24. Capacitor C8 is connected in parallel with resistor R24. The base of transistor Q6 is connected to the junction of resistors R23 and R24. The emitter of transistor Q6 is connected to ground. The collector of transistor Q6 is connected to the cathode of optocoupler U1. The anode of optocoupler U1 is connected to the first power supply terminal of the power module successively through resistors R26 and R25. One end of capacitor C9 is connected to the emitter of transistor Q6, and the other end of capacitor C9 is connected to the junction of resistors R26 and R25. The emitter of optocoupler U1 is connected to ground. The collector of optocoupler U1 is connected to the second power supply terminal of the power module through resistor R27. The collector of optocoupler U1 is connected to the seventh connection terminal of the second processor through resistor R28. The two ends of capacitor C10 are connected to the collector and emitter of optocoupler U1 respectively.

[0051] As a further preferred embodiment, in this example, the main processing unit further includes a voltage comparison module. The voltage comparison module includes a data selector, a reference voltage source, and a comparator. The data selector is configured with multiple data terminals, address terminals, and output terminals. The second processor is configured with an eighth connection terminal and a ninth connection terminal. Multiple valve drive modules are configured, each connected to a corresponding data terminal of the data selector. The eighth connection terminal of the second processor is connected to the address terminal of the data selector. The output terminal of the data selector and the reference voltage source are respectively connected to the input terminal of the comparator. The output terminal of the comparator is connected to the ninth connection terminal of the second processor. In this embodiment, the voltage comparison module detects whether the potential signal at one or more locations in the valve drive module becomes abnormal after prolonged use of the gas stove.

[0052] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the concept of this utility model and the contents of the specification and drawings of this utility model, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A control system for a gas hob, characterized in that: It includes a main processing unit and a human-computer interaction unit, wherein the main processing unit is communicatively connected to the human-computer interaction unit; The human-computer interaction unit includes a first processor, a first communication interface module, a touch button module, a digital display module, and an angle detection module. The first processor is connected to the first communication interface module, the touch button module, the digital display module, and the angle detection module, respectively. The main processing unit includes a second processor, a power module, a second communication interface module, a valve drive module, a ignition switch detection module, and a pulse ignition module. The second processor is connected to the second communication interface module, the valve drive module, the ignition switch detection module, and the pulse ignition module, respectively. The power module is connected to the second processor, the second communication interface module, the valve drive module, the ignition switch detection module, and the pulse ignition module, respectively. The first communication interface module of the human-computer interaction unit is electrically connected to the second communication interface module of the main processing unit.

2. A control system for a gas hob according to claim 1, characterized in that: The angle detection module includes a sensor port for connecting to an angle sensor, resistor R1, resistor R2, and capacitor C1. The sensor port is configured with a data terminal, and the first processor is configured with a first connection terminal. The data terminal of the sensor port is connected to the first connection terminal of the first processor through the resistor R1, and the data terminal of the sensor port is connected to the ground terminal through the resistor R2. The capacitor C1 is connected in parallel with the resistor R2.

3. A control system for a gas hob as claimed in claim 1, characterized in that: The valve drive module includes a valve port, transistors Q1, Q2, and Q3, a switching transistor Q4, a diode D1, an inductor L1, a capacitor C2, a capacitor C3, resistors R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, and R15. The second processor is configured with a first connection terminal, a second connection terminal, a third connection terminal, and a fourth connection terminal. The first connection terminal of the second processor is connected to the base of transistor Q1 through resistor R3. The emitter of transistor Q1 is connected to the power supply terminal. The two ends of resistor R4 are connected to the base and emitter of transistor Q1 respectively. The collector of transistor Q1 is connected to the base of transistor Q2 through resistor R5. The collector of transistor Q2 is connected to the second connection terminal of the second processor through resistors R7 and R8 respectively. The second connection terminal of the second processor is connected to ground through capacitor C2. The two ends of resistor R6 are connected to the base and emitter of transistor Q2 respectively. The third connection terminal of the second processor is connected to the base of transistor Q3 through resistor R9. The emitter of transistor Q3 is connected to the power supply terminal. The two ends of resistor R10 are connected to the base and emitter of transistor Q3 respectively. The collector of transistor Q3 is connected to the valve port through resistor R11. One end of resistor R12 is connected to the emitter of transistor Q3, and the other end of resistor R12 is connected to the connection point of resistors R7 and R8, and also to the connection point of resistor R11 and the valve port. The emitter of transistor Q2 is connected to ground through resistor R15. Capacitor C3 is connected in parallel with resistor R15. The emitter of transistor Q2 is connected to the anode of diode D1. The cathode of diode D1 is connected to ground through inductor L1. The fourth connection terminal of the second processor is connected to the gate of switching transistor Q4 through resistor R13. The drain of switching transistor Q4 is connected to the cathode of diode D1. The source of switching transistor Q4 is connected to the power supply terminal. The two ends of resistor R14 are connected to the gate and source of switching transistor Q4 respectively.

4. A control system for a gas hob as claimed in claim 3, characterized in that: The point switch detection module includes a switch port, resistor R16, resistor R17, capacitor C4, and Zener diode D2. The second processor is configured with a fifth connection terminal. The fifth connection terminal of the second processor is connected to the negative terminal of the Zener diode D2 through the resistor R17. The positive terminal of the Zener diode D2 is connected to ground. The negative terminal of the Zener diode D2 is connected to the power supply terminal through the resistor R16. The capacitor C4 is connected in parallel with the Zener diode D2. The two ends of the switch port are connected to the positive and negative terminals of the Zener diode D2 respectively. The negative terminal of the Zener diode D2 is connected to the power supply terminal.

5. A control system for a gas hob as claimed in claim 4, characterized in that: The pulse ignition module includes an ignition port, a driver chip of model AP2406, resistors R18, R19, R20, R21, and R22, capacitors C5, C6, and C7, inductor L2, and transistor Q5. The driver chip is configured with an input terminal, an output terminal, a feedback terminal, and an enable terminal. The second processor is configured with a sixth connection terminal. The sixth connection terminal of the second processor is connected to the base of transistor Q5 through resistor R18. The switching port is connected to the base of transistor Q5 through resistor R19. The emitter of transistor Q5 is connected to the power supply terminal. The collector of transistor Q5 is connected to ground through capacitor C5. The two ends of resistor R20 are connected to the emitter and collector of transistor Q5 respectively. The collector of transistor Q5 is connected to the input terminal and the enable terminal of the driver chip respectively. The output terminal of the driver chip is connected to the ignition port through inductor L2. One end of capacitor C6 is connected to the connection terminal of inductor L2 and the ignition port. The other end of capacitor C6 is connected to the feedback terminal of the driver chip. Resistor R21 is connected in parallel with capacitor C6. The feedback terminal of the driver chip is connected to ground through resistor R22. One end of capacitor C7 is connected to the connection point of inductor L2 and capacitor C6. The other end of capacitor C7 is connected to ground.

6. A control system for a gas hob according to claim 1, characterized in that: The main processing unit further includes a zero-crossing detection module, and the second processor is connected to the zero-crossing detection module.

7. A control system for a gas hob according to claim 6, characterized in that: The zero-crossing detection module includes an optocoupler U1, a transistor Q6, resistors R23, R24, R25, R26, R27, and R28, capacitors C8, C9, and C10. The second processor is configured with a seventh connection terminal, and the power supply module is configured with a rectifier output terminal, a first power supply terminal, and a second power supply terminal. The rectified output terminal of the power module is connected to ground successively through resistors R23 and R24. Capacitor C8 is connected in parallel with resistor R24. The base of transistor Q6 is connected to the junction of resistors R23 and R24. The emitter of transistor Q6 is connected to ground. The collector of transistor Q6 is connected to the cathode of optocoupler U1. The anode of optocoupler U1 is connected to the first power supply terminal of the power module successively through resistors R26 and R25. One end of capacitor C9 is connected to the emitter of transistor Q6, and the other end of capacitor C9 is connected to the junction of resistors R26 and R25. The emitter of optocoupler U1 is connected to ground. The collector of optocoupler U1 is connected to the second power supply terminal of the power module through resistor R27. The collector of optocoupler U1 is connected to the seventh connection terminal of the second processor through resistor R28. The two ends of capacitor C10 are connected to the collector and emitter of optocoupler U1 respectively.

8. A control system for a gas hob according to claim 1, characterized in that: The main processing unit further includes a voltage comparison module, which includes a data selector, a reference voltage source, and a comparator. The data selector is configured with multiple data terminals, address terminals, and output terminals. The second processor is configured with an eighth connection terminal and a ninth connection terminal. Multiple valve drive modules are configured, and each valve drive module is connected to a corresponding data terminal of the data selector. The eighth connection terminal of the second processor is connected to the address terminal of the data selector. The output terminal of the data selector and the reference voltage source are respectively connected to the input terminal of the comparator. The output terminal of the comparator is connected to the ninth connection terminal of the second processor.

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