A microcrystalline panel temperature detection circuit

Abstract

A kind of microcrystalline panel temperature detection circuit, including master unit U1 and the terminal P1 for receiving microcrystalline panel temperature signal, the first port of the master unit U1 is connected with resistance R4, the second port of the master unit U1 is also connected with the resistance R4, the port is also connected with one end of resistance R2, the other end of the resistance R2 is connected with the terminal P1;Resistance R1 and capacitor C4 are respectively connected between the third port and the fourth port of the master unit U1, the resistance R1 is also grounded through capacitor C2, the third port is also grounded through resistance R3The present application uses the integrated control scheme that is not applied to electric ceramic stove in the market at present, compared with the traditional scheme circuit, one single-chip microcomputer specially used for signal detection is reduced, through simple resistance, capacitor peripheral compensation circuit, only general single-chip microcomputer is used, that is, the circuit scheme of display, operation, detection, control is integrated, the cost of scheme is saved.

Description

Technical Field

[0001] This utility model relates to the field of electric ceramic stoves, and in particular to a temperature detection circuit for a microcrystalline panel. Background Technology

[0002] An electric ceramic cooktop converts electrical energy into heat energy through the heating effect of electric current. It uses an iron-chromium heating element (resistance wire) to generate heat, and then transfers the heat to the cookware through infrared radiation and heat conduction to achieve cooking.

[0003] The advantage of electric ceramic cooktops is that they are not picky about cookware materials; they can heat iron, aluminum, ceramic, glass, etc. At the same time, in order to make electric ceramic cooktops suitable for different usage scenarios, multi-functional electric ceramic cooktops have begun to appear on the market, which can realize everyday functions such as hot pot, stir-frying, steaming, stewing, timer, and reservation. Therefore, more complex hardware circuits need to be designed to achieve the corresponding functions.

[0004] Because electric ceramic cooktops use direct heating, they heat up faster and reach higher temperatures, up to 800℃, which poses a risk of the microcrystalline panel cracking. Therefore, real-time temperature monitoring of the microcrystalline panel is necessary for temperature control. To more accurately detect the panel temperature, a dedicated MCU is used to detect the signal, and then the panel's MCU is used for display and operation control. This increases the overall cost of the solution. Utility Model Content

[0005] To address the aforementioned issues, this technical solution provides a temperature detection circuit for a microcrystalline panel.

[0006] To achieve the above objectives, the technical solution is as follows:

[0007] A microcrystalline panel temperature detection circuit includes a main control unit U1 and a terminal P1 for receiving microcrystalline panel temperature signals. The first port of the main control unit U1 is connected to a resistor R4, and the second port of the main control unit U1 is also connected to the resistor R4. This port is also connected to one end of a resistor R2, and the other end of the resistor R2 is connected to the terminal P1.

[0008] The third port and the fourth port of the main control unit U1 are respectively connected to a resistor R1 and a capacitor C4. The resistor R1 is also grounded through the capacitor C2, and the third port is also grounded through the resistor R3.

[0009] In some embodiments, the main control unit U1 is model CMS89F6285.

[0010] In some embodiments, a terminal FAN1 for connecting to a fan is also included. One end of the terminal FAN1 receives voltage, and the other end is connected to the collector of a transistor Q1. The emitter of the transistor Q1 is grounded, and the base receives a start signal.

[0011] In some embodiments, a buzzer BZ1 is also included. One end of the buzzer BZ1 is grounded, and the other end is connected to the main control unit U1 through a capacitor C6. The capacitor C6 is also connected to a voltage through a resistor R12 and a resistor R11 in sequence. The common terminal of the resistors R11 and R12 is grounded through a thermistor RT1.

[0012] The beneficial effects of this application are:

[0013] This application adopts an integrated control scheme that is not currently used in electric ceramic cooktops. Compared with traditional circuit schemes, it eliminates the need for a dedicated microcontroller for signal detection. Through a simple external compensation circuit using resistors and capacitors, it achieves a circuit scheme that integrates display, operation, detection, and control using only a general-purpose microcontroller, thus saving on the cost of the scheme. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the block structure of an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 1 ;

[0017] Figure 3 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 2 . Detailed Implementation

[0018] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] Please refer to Figure 1-3 As shown, a microcrystalline panel temperature detection circuit includes a main control unit U1 and a terminal P1 for receiving microcrystalline panel temperature signals. The first port of the main control unit U1 is connected to a resistor R4, and the second port of the main control unit U1 is also connected to the resistor R4. This port is also connected to one end of a resistor R2, and the other end of the resistor R2 is connected to the terminal P1.

[0020] The third port and the fourth port of the main control unit U1 are respectively connected to a resistor R1 and a capacitor C4. The resistor R1 is also grounded through the capacitor C2, and the third port is also grounded through the resistor R3.

[0021] In this embodiment, the main control unit U1 is model CMS89F6285.

[0022] This utility model provides a cost-saving solution for electric ceramic stoves. The input voltage directly supplies power to the load, while a branch power circuit supplies power to the microcontroller and controls the peripheral circuits. The microcontroller detects the temperature signal of the microcrystalline panel and the signals of the peripheral circuits, and outputs signals in real time to achieve the best working state.

[0023] This circuit uses a CMS89F6285B microcontroller to detect the input signal, amplify the signal internally, and improve the signal detection accuracy through software compensation, thereby achieving precise control.

[0024] The circuit operation process of this utility model is as follows: The input signal is connected to the microcontroller after passing through components such as R1, R2, R3, R4, C2, and C4. The microcontroller then amplifies the signal internally to make more accurate judgments. At the same time, the above process is repeated through the increase and decrease compensation control of the output signal, and finally the purpose of precise control is achieved.

[0025] This invention utilizes a CMS89F6285B microcontroller, and through an external compensation circuit and internal signal amplification and processing, combined with software for detection and control. Compared with traditional circuits, it reduces the need for a dedicated microcontroller for signal detection. Instead, the detection signal is compensated through a simple resistor and capacitor circuit. Using a general-purpose microcontroller, a circuit solution integrating display, operation, detection, and control can be achieved, thus saving on solution costs.

[0026] In this embodiment, a terminal FAN1 for connecting to the fan is also included. One end of the terminal FAN1 receives voltage, and the other end is connected to the collector of the transistor Q1. The emitter of the transistor Q1 is grounded, and the base receives a start signal. When the transistor receives the start signal, it conducts and then turns on the fan for heat dissipation.

[0027] In this embodiment, a buzzer BZ1 is also included. One end of the buzzer BZ1 is grounded, and the other end is connected to the main control unit U1 through a capacitor C6. The capacitor C6 is also connected to a voltage source through a resistor R12 and a resistor R11 in sequence. The common terminal of the resistors R11 and R12 is grounded through a thermistor RT1. When the temperature changes, the buzzer sounds an alarm to provide a warning.

[0028] The above description is only a preferred embodiment of this application and is not intended to limit the scope of implementation of this application. Any other embodiments whose principles and basic structures are the same as or similar to those of this application are within the protection scope of this application.

Claims

1. A temperature detection circuit for a microcrystalline panel, characterized in that, It includes a main control unit U1 and a terminal P1 for receiving temperature signals from the microcrystalline panel. The first port of the main control unit U1 is connected to a resistor R4, and the second port of the main control unit U1 is also connected to the resistor R4. This port is also connected to one end of a resistor R2, and the other end of the resistor R2 is connected to the terminal P1. The third port and the fourth port of the main control unit U1 are respectively connected to a resistor R1 and a capacitor C4. The resistor R1 is also grounded through the capacitor C2, and the third port is also grounded through the resistor R3.

2. The microcrystalline panel temperature detection circuit according to claim 1, characterized in that: The main control unit U1 is model CMS89F6285.

3. The microcrystalline panel temperature detection circuit according to claim 1, characterized in that: It also includes a terminal FAN1 for connecting to the fan, one end of which receives voltage and the other end is connected to the collector of transistor Q1, the emitter of transistor Q1 is grounded and the base receives the start signal.

4. The microcrystalline panel temperature detection circuit according to claim 1, characterized in that: It also includes a buzzer BZ1, one end of which is grounded and the other end is connected to the main control unit U1 through a capacitor C6. The capacitor C6 is also connected to a voltage through a resistor R12 and a resistor R11 in sequence. The common terminal of the resistors R11 and R12 is grounded through a thermistor RT1.

Images