Cooking temperature control circuit

Abstract

The utility model discloses a cooking temperature control circuit which comprises a main control module, a relay module and a timing module. And the main control module comprises a microprocessor U5. The relay module comprises a relay RLY1, a triode Q1 and a voltage stabilizing diode D1. The first end of the relay RLY1 is electrically connected with the emitting electrode of the triode Q1. The cooking temperature control circuit disclosed by the utility model has the beneficial effects that the timing chip U2 regularly outputs the timing signal, and when the microcontroller U5 receives the timing signal from the timing chip U2, the relay RLY1 is triggered, so that a heater of a cooking kettle for cooking zongzi is in a heating state. And when the microcontroller U5 does not receive the timing signal from the timing chip U2, the relay RLY1 is stopped from being triggered, so that a heater of the cooking kettle for rice dumpling cooking is in a non-heating state, the temperature in the cooking kettle fluctuates within a certain range, and rice dumpling cooking is facilitated.

Description

Technical Field

[0001] The utility model belongs to the field of zongzi processing equipment, and particularly relates to a boiling temperature control circuit. Background Art

[0002] The invention patent application with the publication number of CN102389254A and the theme name of the temperature control method of an electric cooking utensil has an IPC classification number of A47J27 / 00 and G05D23 / 19. Its technical solution discloses "a temperature control method of an electric cooking utensil, the electric cooking utensil includes an inner pot, a heater for heating the inner pot, an inner pot temperature detector for detecting the temperature of the inner pot, a heater temperature detector for detecting the temperature of the heater, and a controller. The inner pot temperature detector, the heater temperature detector, and the control circuit of the heater are respectively electrically connected to the controller; the temperature control method of the electric cooking utensil includes the following steps: (1) starting the controller; (2) selecting a food cooking temperature T0 on the electric cooking utensil, and then determining a constant temperature target temperature T1 of the inner pot of the pot body by the controller, T1 = T0 ± K; where the K value is a correction temperature difference value preset according to the structure of the cooking utensil and different cooking objects; the controller simultaneously monitors the working temperatures of the inner pot and the heater through the inner pot temperature detector and the heater temperature detector respectively."

[0003] It can be seen that the above invention patent application has disclosed the technical solution of one of the temperature control methods of the electric cooking utensil. However, the technical solution disclosed in the above invention patent application does not further disclose the circuit structure of the temperature control circuit and needs to be further improved. Utility Model Content

[0004] The utility model aims at the current situation of the prior art, overcomes the above defects, and provides a boiling temperature control circuit.

[0005] The utility model adopts the following technical solutions. The boiling temperature control circuit includes a main control module, a relay module, and a timing module, where:

[0006] The main control module includes a microprocessor U5;

[0007] The relay module includes a relay RLY1, a triode Q1, and a voltage stabilizing diode D1. The 1st terminal of the relay RLY1 is electrically connected to the emitter of the triode Q1. The common terminal between the emitter of the triode Q1 and the 1st terminal of the relay RLY1 is electrically connected to the positive electrode of the voltage stabilizing diode D1. The 4th terminal of the relay RLY1 is electrically connected to the collector of the triode Q1. The common terminal between the collector of the triode Q1 and the 4th terminal of the relay RLY1 is electrically connected to the negative electrode of the voltage stabilizing diode D1. The base of the triode Q1 is electrically connected to the 10th terminal of the microprocessor U5;

[0008] The relay module further includes a terminal block U4. The 3rd terminal of the relay RLY1 is electrically connected to the 1st terminal of the terminal block U4, the 2nd terminal of the relay RLY1 is electrically connected to the 3rd terminal of the terminal block U4, and the 5th terminal of the relay RLY1 is electrically connected to the heater.

[0009] The timing module includes a timing chip U2. The 7th terminal of the timing chip U2 is electrically connected to the 1st terminal of the microprocessor U5, the 6th terminal of the timing chip U2 is electrically connected to the 2nd terminal of the microprocessor U5, and the 5th terminal of the timing chip U2 is electrically connected to the 3rd terminal of the microprocessor U5.

[0010] As a preferred technical solution of the above technical solution, the boiling temperature control circuit further includes a temperature sensing module. The temperature sensing module includes a temperature sensor U3. The 2nd terminal of the temperature sensor U3 is electrically connected to the 5th terminal of the microprocessor U5, and the temperature sensor U3 is located inside the container of the boiling kettle.

[0011] As a preferred technical solution of the above technical solution, the boiling temperature control circuit further includes a display module and a pull-up resistor module. The display module includes a display screen U6, and the pull-up resistor module includes a pull-up resistor RN1, where:

[0012] The 14th terminal of the display screen U6 is electrically connected to the resistor RN18 of the pull-up resistor RN1, and the resistor RN18 is electrically connected to the 32nd terminal of the microprocessor U5;

[0013] The 13th terminal of the display screen U6 is electrically connected to the resistor RN17 of the pull-up resistor RN1, and the resistor RN17 is electrically connected to the 33rd terminal of the microprocessor U5;

[0014] The 12th terminal of the display screen U6 is electrically connected to the resistor RN16 of the pull-up resistor RN1, and the resistor RN16 is electrically connected to the 34th terminal of the microprocessor U5;

[0015] The 11th terminal of the display screen U6 is electrically connected to the resistor RN15 of the pull-up resistor RN1, and the resistor RN15 is electrically connected to the 35th terminal of the microprocessor U5;

[0016] The 10th terminal of the display screen U6 is electrically connected to the resistor RN14 of the pull-up resistor RN1, and the resistor RN14 is electrically connected to the 36th terminal of the microprocessor U5;

[0017] The 9th terminal of the display screen U6 is electrically connected to the resistor RN13 of the pull-up resistor RN1, and the resistor RN13 is electrically connected to the 37th terminal of the microprocessor U5;

[0018] The 8th terminal of the display screen U6 is electrically connected to the resistor RN12 of the pull-up resistor RN1, and the resistor RN12 is electrically connected to the 38th terminal of the microprocessor U5;

[0019] The 7th terminal of the display screen U6 is electrically connected to the resistor RN11 of the resistor array RN1, and the resistor RN11 is electrically connected to the 39th terminal of the microprocessor U5;

[0020] The 6th terminal of the display screen U6 is electrically connected to the 28th terminal of the microprocessor U5;

[0021] The 5th terminal of the display screen U6 is electrically connected to the 27th terminal of the microprocessor U5;

[0022] The 4th terminal of the display screen U6 is electrically connected to the 26th terminal of the microprocessor U5.

[0023] As a preferred technical solution of the above technical solution, the cooking temperature control circuit further includes a key module. The key module includes keys KEY2, KEY3, KEY4, KEY5, and KEY6, where:

[0024] The 1st terminal of the key KEY2 is electrically connected to the 4th terminal of the microprocessor U5;

[0025] The 1st terminal of the key KEY3 is electrically connected to the 6th terminal of the microprocessor U5;

[0026] The 1st terminal of the key KEY4 is electrically connected to the 8th terminal of the microprocessor U5;

[0027] The 1st terminal of the key KEY5 is electrically connected to the 16th terminal of the microprocessor U5;

[0028] The 1st terminal of the key KEY6 is electrically connected to the 17th terminal of the microprocessor U5.

[0029] As a preferred technical solution of the above technical solution, the cooking temperature control circuit further includes a buzzer module. The buzzer module includes a buzzer BUZZER1 and a triode Q2. The 1st terminal of the buzzer BUZZER1 is electrically connected to the emitter of the triode Q2, and the base of the triode Q2 is electrically connected to the 7th terminal of the microprocessor U5.

[0030] For the cooking temperature control circuit disclosed by the present utility model, its beneficial effect is that the timing chip U2 periodically outputs a timing signal. When the microcontroller U5 receives the timing signal from the timing chip U2, it triggers the relay RLY1, so that the heater of the cooking kettle for cooking zongzi is in the heating state. When the microcontroller U5 does not receive the timing signal from the timing chip U2, it stops triggering the relay RLY1, so that the heater of the cooking kettle for cooking zongzi is in the non-heating state, thereby enabling the temperature in the cooking kettle to fluctuate within a certain range, which is beneficial to cooking zongzi. Description of the Drawings

[0031] Figure 1 It is the circuit schematic diagram of the main control module of this application.

[0032] Figure 2 It is the circuit schematic diagram of the relay module of this application.

[0033] Figure 3 It is the circuit schematic diagram of the display module of this application.

[0034] Figure 4 It is the circuit schematic diagram of the key module of this application.

[0035] Figure 5 It is the circuit schematic diagram of the temperature sensor module of this application.

[0036] Figure 6 It is the circuit schematic diagram of the pull-up resistor module of this application.

[0037] Figure 7 It is the circuit schematic diagram of the buzzer module of this application.

[0038] Figure 8 It is the circuit schematic diagram of the timing module of this application.

[0039] Figure 9 It is the circuit schematic diagram of the power supply module of this application.

[0040] Figure 10 It is the circuit schematic diagram of the reset module of this application.

[0041] Figure 11 It is the circuit schematic diagram of the crystal oscillator module of this application.

[0042] Figure 12 It is the circuit schematic diagram of the battery module of this application. Specific Embodiments

[0043] The present utility model discloses a cooking temperature control circuit. The following combines with the preferred embodiment (Embodiment 1) and refers to the Figures 1-12 of the accompanying drawings to further describe the specific embodiments of the present utility model.

[0044] Refer to the Figures 1 to 12 , Figures 1 to 12 which respectively show the circuit structures of the main control module, relay module, display module, key module, temperature sensor module, pull-up resistor module, buzzer module, timing module, power supply module, reset module, crystal oscillator module and battery module of the cooking temperature control circuit.

[0045] Embodiment 1.

[0046] Preferably, the cooking temperature control circuit includes a main control module, a relay module and a timing module, wherein:

[0047] The main control module includes a microprocessor U5;

[0048] The relay module includes relay RLY1, triode Q1, and zener diode D1. The 1st terminal of relay RLY1 is electrically connected to the emitter of triode Q1. The common terminal between the emitter of triode Q1 and the 1st terminal of relay RLY1 is electrically connected to the positive electrode of zener diode D1. The 4th terminal of relay RLY1 is electrically connected to the collector of triode Q1. The common terminal between the collector of triode Q1 and the 4th terminal of relay RLY1 is electrically connected to the negative electrode of zener diode D1. The base of triode Q1 is electrically connected to the 10th terminal of microprocessor U5;

[0049] The relay module further includes terminal block U4. The 3rd terminal of relay RLY1 is electrically connected to the 1st terminal of terminal block U4. The 2nd terminal of relay RLY1 is electrically connected to the 3rd terminal of terminal block U4. The 5th terminal of relay RLY1 is electrically connected to the heater (which can be regarded as the load of the cooking temperature control circuit) of the cooking kettle (for cooking zongzi). The 2nd terminal of terminal block U4 is electrically connected to the heater (which can be regarded as the load of the cooking temperature control circuit) of the cooking kettle (for cooking zongzi);

[0050] The timing module includes timing chip U2. The 7th terminal of timing chip U2 is electrically connected to the 1st terminal of microprocessor U5. The 6th terminal of timing chip U2 is electrically connected to the 2nd terminal of microprocessor U5. The 5th terminal of timing chip U2 is electrically connected to the 3rd terminal of microprocessor U5, so that timing chip U2 periodically outputs timing signals (and periodically does not output timing signals, and the periodic output of timing signals and the periodic non - output of timing signals alternate in a cycle). When microcontroller U5 receives the timing signal from timing chip U2, it triggers relay RLY1, making the heater (of the cooking kettle for cooking zongzi) in the heating state. When microcontroller U5 does not receive the timing signal from timing chip U2, it stops triggering relay RLY1, making the heater (of the cooking kettle for cooking zongzi) in the non - heating state, so that the temperature in the cooking kettle fluctuates within a certain range, which is beneficial to cooking zongzi.

[0051] Among them, the model of microprocessor U5 is preferably STC90C52RC - 40I_C14023.

[0052] Among them, the model of triode Q1 is preferably S9013.

[0053] Among them, the model of zener diode D1 is preferably BZX55C20.

[0054] Among them, timing chip U2 is preferably DS1302 +.

[0055] Embodiment 2.

[0056] Embodiment 2 is based on Embodiment 1 and further includes the following technical solutions.

[0057] Among them, the cooking temperature control circuit further includes a temperature sensing module. The temperature sensing module includes a temperature sensor U3. The second terminal of the temperature sensor U3 is electrically connected to the fifth terminal of the microprocessor U5. The temperature sensor U3 is located inside the container of the cooking kettle for cooking zongzi.

[0058] Among them, the cooking temperature control circuit further includes a display module and a pull-up resistor module. The display module includes a display screen U6. The pull-up resistor module includes a pull-up resistor RN1. Among them:

[0059] The fourteenth terminal of the display screen U6 is electrically connected to the resistor RN18 of the pull-up resistor RN1. The resistor RN18 is electrically connected to the thirty-second terminal of the microprocessor U5;

[0060] The thirteenth terminal of the display screen U6 is electrically connected to the resistor RN17 of the pull-up resistor RN1. The resistor RN17 is electrically connected to the thirty-third terminal of the microprocessor U5;

[0061] The twelfth terminal of the display screen U6 is electrically connected to the resistor RN16 of the pull-up resistor RN1. The resistor RN16 is electrically connected to the thirty-fourth terminal of the microprocessor U5;

[0062] The eleventh terminal of the display screen U6 is electrically connected to the resistor RN15 of the pull-up resistor RN1. The resistor RN15 is electrically connected to the thirty-fifth terminal of the microprocessor U5;

[0063] The tenth terminal of the display screen U6 is electrically connected to the resistor RN14 of the pull-up resistor RN1. The resistor RN14 is electrically connected to the thirty-sixth terminal of the microprocessor U5;

[0064] The ninth terminal of the display screen U6 is electrically connected to the resistor RN13 of the pull-up resistor RN1. The resistor RN13 is electrically connected to the thirty-seventh terminal of the microprocessor U5;

[0065] The eighth terminal of the display screen U6 is electrically connected to the resistor RN12 of the pull-up resistor RN1. The resistor RN12 is electrically connected to the thirty-eighth terminal of the microprocessor U5;

[0066] The seventh terminal of the display screen U6 is electrically connected to the resistor RN11 of the pull-up resistor RN1. The resistor RN11 is electrically connected to the thirty-ninth terminal of the microprocessor U5;

[0067] The sixth terminal of the display screen U6 is electrically connected to the twenty-eighth terminal of the microprocessor U5;

[0068] The fifth terminal of the display screen U6 is electrically connected to the twenty-seventh terminal of the microprocessor U5;

[0069] The fourth terminal of the display screen U6 is electrically connected to the twenty-sixth terminal of the microprocessor U5.

[0070] In this embodiment, a temperature sensor U3 is disposed inside the container of the cooking kettle, and the temperature sensor U3 outputs a temperature sensing signal of the internal temperature of the container of the cooking kettle in real time. The microprocessor U5 displays the internal temperature of the container of the cooking kettle on the display screen U6 according to the temperature sensing signal.

[0071] Among them, the model of the temperature sensor U3 is preferably DS18B20.

[0072] Among them, the model of the display screen U6 is preferably LCD1602.

[0073] Embodiment 3.

[0074] Embodiment 3 is based on Embodiment 1 or Embodiment 2, and further includes the following technical solutions.

[0075] Among them, the cooking temperature control circuit further includes a key module. The key module includes keys KEY2, KEY3, KEY4, KEY5, and KEY6, where:

[0076] The No. 1 terminal of the key KEY2 is electrically connected to the No. 4 terminal of the microprocessor U5;

[0077] The No. 1 terminal of the key KEY3 is electrically connected to the No. 6 terminal of the microprocessor U5;

[0078] The No. 1 terminal of the key KEY4 is electrically connected to the No. 8 terminal of the microprocessor U5;

[0079] The No. 1 terminal of the key KEY5 is electrically connected to the No. 16 terminal of the microprocessor U5;

[0080] The No. 1 terminal of the key KEY6 is electrically connected to the No. 17 terminal of the microprocessor U5.

[0081] In this embodiment, by triggering the keys KEY2 to KEY6, the output duration of the timing signal of the chip U2 can be adjusted.

[0082] Among them, the cooking temperature control circuit further includes a buzzer module. The buzzer module includes a buzzer BUZZER1 and a triode Q2. The No. 1 terminal of the buzzer BUZZER1 is electrically connected to the emitter of the triode Q2, and the base of the triode Q2 is electrically connected to the No. 7 terminal of the microprocessor U5.

[0083] In this embodiment, a buzzer sound can be output by the buzzer BUZZER1.

[0084] Embodiment 4.

[0085] Embodiment 4 is based on Embodiment 1 or Embodiment 2 or Embodiment 3, and further includes the following technical solutions.

[0086] Among them, the cooking temperature control circuit further includes a power supply module, a reset module, a crystal oscillator module, and a battery module. Refer to the attached drawings for Figures 9 to 12 .

[0087] It is worth mentioning that the technical features such as the control algorithm that may be built into the microprocessor U5 involved in the patent application of the present utility model should be regarded as the prior art (for the corresponding temperature control method, refer to CN102389254A in the background art). For the specific structures, working principles, possible control methods, and spatial arrangement methods of these technical features, conventional selections in the art can be adopted, and they should not be regarded as the inventive points of the patent of the present utility model. The patent of the present utility model will not be further specifically elaborated.

[0088] For those skilled in the art, it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A cooking temperature control circuit, characterized in that: It includes a main control module, a relay module and a timing module, among which: The main control module includes a microprocessor U5; The relay module includes a relay RLY1, a transistor Q1, and a voltage-stabilizing diode D1. Terminal 1 of the relay RLY1 is electrically connected to the emitter of the transistor Q1, a common terminal between the emitter of the transistor Q1 and terminal 1 of the relay RLY1 is electrically connected to the positive electrode of the voltage-stabilizing diode D1, terminal 4 of the relay RLY1 is electrically connected to the collector of the transistor Q1, a common terminal between the collector of the transistor Q1 and terminal 4 of the relay RLY1 is electrically connected to the negative electrode of the voltage-stabilizing diode D1, and a base of the transistor Q1 is electrically connected to terminal 10 of the microprocessor U5; The relay module further includes a wiring terminal U4, a terminal 3 of the relay RLY1 is electrically connected to a terminal 1 of the wiring terminal U4, a terminal 2 of the relay RLY1 is electrically connected to a terminal 3 of the wiring terminal U4, and a terminal 5 of the relay RLY1 is electrically connected to the heater; The timing module includes a timing chip U2, terminal 7 of the timing chip U2 is electrically connected to terminal 1 of the microprocessor U5, terminal 6 of the timing chip U2 is electrically connected to terminal 2 of the microprocessor U5, and terminal 5 of the timing chip U2 is electrically connected to terminal 3 of the microprocessor U5.

2. The cooking temperature control circuit according to claim 1, characterized in that: The cooking temperature control circuit also includes a temperature sensing module, which includes a temperature sensor U3. Terminal 2 of the temperature sensor U3 is electrically connected to terminal 5 of the microprocessor U5. The temperature sensor U3 is located inside the container of the cooking kettle.

3. The cooking temperature control circuit according to claim 1, characterized in that: The cooking temperature control circuit also includes a display module and a resistor module. The display module includes a display screen U6, and the resistor module includes a resistor RN1, wherein: Terminal 14 of the display screen U6 is electrically connected to the resistor RN18 of the resistor array RN1, and the resistor RN18 is electrically connected to terminal 32 of the microprocessor U5; Terminal 13 of the display screen U6 is electrically connected to the resistor RN17 of the resistor array RN1, and the resistor RN17 is electrically connected to terminal 33 of the microprocessor U5; Terminal 12 of the display screen U6 is electrically connected to the resistor RN16 of the resistor array RN1, and the resistor RN16 is electrically connected to terminal 34 of the microprocessor U5; Terminal 11 of the display screen U6 is electrically connected to the resistor RN15 of the resistor array RN1, and the resistor RN15 is electrically connected to terminal 35 of the microprocessor U5; Terminal 10 of the display screen U6 is electrically connected to the resistor RN14 of the resistor array RN1, and the resistor RN14 is electrically connected to terminal 36 of the microprocessor U5; Terminal 9 of the display screen U6 is electrically connected to the resistor RN13 of the resistor array RN1, and the resistor RN13 is electrically connected to terminal 37 of the microprocessor U5; Terminal 8 of the display screen U6 is electrically connected to the resistor RN12 of the resistor array RN1, and the resistor RN12 is electrically connected to terminal 38 of the microprocessor U5; Terminal 7 of the display screen U6 is electrically connected to the resistor RN11 of the resistor array RN1, and the resistor RN11 is electrically connected to terminal 39 of the microprocessor U5; Terminal 6 of the display screen U6 is electrically connected to terminal 28 of the microprocessor U5; Terminal 5 of the display screen U6 is electrically connected to terminal 27 of the microprocessor U5; Terminal 4 of the display screen U6 is electrically connected to terminal 26 of the microprocessor U5.

4. The cooking temperature control circuit according to claim 1, characterized in that: The cooking temperature control circuit also includes a key module, which includes a key KEY2, a key KEY3, a key KEY4, a key KEY5 and a key KEY6, wherein: Terminal 1 of key KEY2 is electrically connected to terminal 4 of microprocessor U5; Terminal 1 of key KEY3 is electrically connected to terminal 6 of microprocessor U5; Terminal 1 of key KEY4 is electrically connected to terminal 8 of microprocessor U5; Terminal 1 of key KEY5 is electrically connected to terminal 16 of microprocessor U5; Terminal 1 of the key KEY6 is electrically connected to terminal 17 of the microprocessor U5.

5. The cooking temperature control circuit according to claim 1, characterized in that: The cooking temperature control circuit also includes a buzzer module, which includes a buzzer BUZZER1 and a transistor Q2, wherein terminal 1 of the buzzer BUZZER1 is electrically connected to the emitter of the transistor Q2, and the base of the transistor Q2 is electrically connected to terminal 7 of the microprocessor U5.

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