Coupling device of food processor, food processor and working method

Abstract

The present invention relates to a coupling device of a food processor, comprising a first coupler arranged on a base of the food processor, a second coupler arranged on a movable part of the food processor, and a first control chip connected to the first coupler by electrical signals, wherein the first coupler and the second coupler can be coupled and connected to each other. The first coupler comprises a signal demodulation module electrically connected to a signal receiving end of the first control chip, and the first coupler has a first connection terminal group electrically connected to the signal demodulation module. The second coupler comprises a second control chip and a signal modulation module electrically connected to a signal transmitting end of the second control chip, and the second coupler has a second connection terminal group electrically connected to the signal modulation module, and the second connection terminal group can be coupled and connected to the first connection terminal group. The coupling device of the food processor has few connection terminals, reliable operation, and no limitation on the number of identification types. The present invention also relates to a food processor and a working method thereof using the coupling device.

Description

Technical Field

[0001] The present invention relates to a coupling device of a food processor, a food processor using the coupling device, and a working method of the food processor. Background Art

[0002] When using food processors such as soymilk machines and juicers, a variety of cup bodies are usually set. In order to facilitate the detection of the cup body type, matching couplers are set on the base of the food processor and the cup body, and then the type of the cup body is judged by the detected coupler signal. For example, the Chinese utility model patent "A food processor capable of identifying a cup body" with the authorization announcement number CN208973544U (application number 201820649517.7) and the Chinese utility model patent "Food processor" with the authorization announcement number CN208822571U (application number 201820521035.3) both use an upper coupler and a lower coupler, and the lower coupler includes a temperature detection end. The cup body type is identified by detecting the difference in the voltage value between the voltage detection end and the temperature detection port. On the one hand, this type of detection structure and detection method can only detect two types of cup bodies, and one of the two types of cup bodies can be heated, and the other cannot be heated. The number of identifications is small and the identification conditions are harsh. Furthermore, when testing, since there is a pressure difference between the temperature detection terminal and the voltage detection terminal, if there is a conductive liquid such as water between the two terminals, it is easy to cause electrolytic corrosion to the voltage detection terminal, accelerating the life of the coupler. On the other hand, since the detection signal is an analog signal, when the upper and lower couplers of the active plug-in structure are used for detection, it is easy for the detection signal to be distorted in transmission between the plug-in terminals due to the stability of the plug-in, which affects the detection accuracy and is difficult to detect. Summary of the invention

[0003] The first technical problem to be solved by the present invention is to provide a coupling device for a food processor with fewer connection terminals and no limitation on the number of identification types in view of the above-mentioned prior art.

[0004] The second technical problem to be solved by the present invention is to provide a coupling device that can avoid electrolytic corrosion in view of the above-mentioned prior art.

[0005] The third technical problem to be solved by the present invention is to provide a food processor using the aforementioned coupling device in view of the above-mentioned prior art.

[0006] The fourth technical problem to be solved by the present invention is to provide a working method of the aforementioned food processor in view of the above-mentioned prior art.

[0007] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: a coupling device for a food processor, comprising a first coupler arranged on a base of the food processor, and a second coupler arranged on a movable part of the food processor, wherein the first coupler and the second coupler can be coupled to each other, and characterized in that: it also comprises a first control chip connected to the first coupler by electrical signals;

[0008] The first coupler comprises a signal demodulation module electrically connected to the signal receiving end of the first control chip, and the first coupler has a first connection terminal group electrically connected to the signal demodulation module;

[0009] The second coupler includes a second control chip and a signal modulation module electrically connected to the signal transmitting end of the second control chip. The second coupler has a second connection terminal group electrically connected to the signal modulation module. The second connection terminal group can be coupled to the first connection terminal group.

[0010] In order to facilitate the power supply to the first coupler, the first coupler also includes a power module electrically connected to the first control chip, the signal demodulation module, and the first connection terminal group, respectively, and the second coupler also includes a power supply module electrically connected to the second control chip, the signal modulation module, and the second connection terminal group. The power supply module can be charged by the power module, and then the power supply module supplies power to the signal modulation module and the second control chip. In this way, there is no need to set up an additional power supply in the movable part. The circuit module set in the movable part can be powered by plugging the movable part into the base, which is more convenient to use.

[0011] The technical solution adopted by the present invention to solve the above second technical problem is: the power supply module is a PWM AC power supply module;

[0012] The first connection terminal group includes a first grounding terminal and a first power-on terminal, the first grounding terminal is grounded via a third capacitor, the signal demodulation module is electrically connected to the first grounding terminal, and the first power-on terminal is electrically connected to the power supply module;

[0013] The second connecting terminal group includes a second grounding terminal that can be coupled to the first grounding terminal and a second power-on terminal that can be coupled to the first power-on terminal. The second grounding terminal is electrically connected to the power supply module and the signal modulation module. The second power-on terminal is electrically connected to the power supply module through the first diode, and the second power-on terminal is electrically connected to the positive electrode of the first diode. The second power-on terminal is electrically connected to the modulation module through the second diode, and the second power-on terminal is electrically connected to the negative electrode of the second diode.

[0014] Preferably, the parameters of the alternating current output by the PWM alternating current power supply module are: a duty cycle of 50%, a frequency of 10 kHz to 150 kHz, and a voltage of 3.3V to 36V.

[0015] Preferably, the PWM AC power supply module includes a sixth resistor, an eleventh resistor, a fourth resistor, a seventh transistor, an eighth resistor, a second transistor, a fifth transistor, and a first resistor;

[0016] The first end of the sixth resistor is electrically connected to the PWM signal output end of the first control chip, the second end of the sixth resistor is electrically connected to the first end of the eleventh resistor, and the second end of the eleventh resistor is grounded;

[0017] The base of the seventh transistor is electrically connected to the second end of the sixth resistor, the emitter of the seventh transistor is grounded, the collector of the seventh transistor is electrically connected to the first end of the fourth resistor, and the second end of the fourth resistor is electrically connected to the power output end of the first control chip;

[0018] The collector of the second triode is electrically connected to the power output terminal of the first control chip, the base of the second triode is electrically connected to the first end of the eighth resistor, the emitter of the second triode is electrically connected to the first end of the first resistor, and the second end of the first resistor is electrically connected to the first power-on terminal;

[0019] The emitter of the fifth transistor is electrically connected to the emitter of the second transistor, the collector of the fifth transistor is grounded, the base of the fifth transistor is electrically connected to the second end of the eighth resistor, and the first end of the eighth resistor is also electrically connected to the first end of the fourth resistor.

[0020] Preferably, the signal demodulation module includes a second resistor, a first capacitor, a third transistor, a seventh resistor, a ninth resistor, a tenth resistor, and a sixth transistor;

[0021] The second resistor is electrically connected to the first end of the first resistor, and the second end of the second resistor is grounded via the first capacitor;

[0022] The emitter of the third triode is electrically connected to the second end of the second resistor, the base of the third triode is electrically connected to the first end of the seventh resistor, the second end of the seventh resistor is electrically connected to the third capacitor, the collector of the third triode is electrically connected to the first end of the ninth resistor, and the second end of the ninth resistor is electrically connected to the base of the sixth triode;

[0023] One end of the tenth resistor is electrically connected to the second end of the ninth resistor, and the other end of the tenth resistor is grounded;

[0024] The emitter of the sixth transistor is grounded, and the collector of the sixth transistor is electrically connected to the signal receiving end of the first control chip.

[0025] Preferably, the power supply module includes a first voltage stabilizing diode, a first electrolytic capacitor, and a second capacitor;

[0026] The anode of the first voltage stabilizing diode is grounded and electrically connected to the second ground terminal, and the cathode of the first voltage stabilizing diode is electrically connected to the cathode of the first diode;

[0027] The positive electrode of the first electrolytic capacitor is electrically connected to the negative electrode of the first diode, and the negative electrode of the first electrolytic capacitor is grounded and electrically connected to the second ground terminal;

[0028] One end of the second capacitor is electrically connected to the power output end of the second control chip and to the cathode of the first diode, and the other end of the second capacitor is grounded and electrically connected to the second ground terminal.

[0029] Preferably, the signal modulation module includes a third resistor, a first transistor, a fourteenth resistor, a fifth resistor, a fourth transistor, a second zener diode, and a third zener diode;

[0030] A first end of the third resistor is electrically connected to the signal output end of the second control chip, a second end of the third resistor is electrically connected to the base of the first triode, an emitter of the first triode is electrically connected to the cathode of the first diode, a collector of the first triode is electrically connected to a first end of a fourteenth resistor, and a second end of the fourteenth resistor is electrically connected to an emitter of the fourth triode;

[0031] A first end of the fifth resistor is electrically connected to the collector of the first transistor, and a second end of the fifth resistor is electrically connected to the base of the fourth transistor;

[0032] The collector of the fourth triode is grounded and electrically connected to the second ground terminal, and the emitter of the fourth triode is electrically connected to the anode of the second diode;

[0033] The anode of the second Zener diode is electrically connected to the anode of the second diode, the anode of the third Zener diode is electrically connected to the cathode of the second Zener diode, and the cathode of the third Zener diode is grounded and electrically connected to the second ground terminal.

[0034] The technical solution adopted by the present invention to solve the third technical problem mentioned above is: a food processor, including a base and at least two movable parts that can be matched and installed on the base, characterized in that: it also includes the aforementioned coupling device, a first coupler is provided on the base, and a second coupler is provided on each movable part.

[0035] The technical solution adopted by the present invention to solve the fourth technical problem is: a working method of the food processor as described above, characterized in that: when a movable component is installed on the base, the second coupler in the movable component is coupled and connected with the first coupler in the base and electrically connected;

[0036] The second control chip in the second coupler outputs the stored characteristic signal to the signal modulation module, the signal modulation module modulates the characteristic signal to form an adjustment signal, and the modulated signal is output to the signal demodulation module in the first coupler;

[0037] The signal demodulation module demodulates the modulated signal and outputs it to the first control chip. The first control chip obtains the demodulated signal and analyzes and calculates it to obtain the type information of the active component corresponding to the characteristic signal.

[0038] The food processor operates according to the working program corresponding to the type information of the active parts.

[0039] Compared with the prior art, the advantages of the present invention are as follows: the coupling device of the food processor in the present invention respectively sets a second control module and a signal modulation module in the second coupler set in the active part, so that the second control modules in different active parts can output different characteristic signals to the signal modulation module, and the characteristic signal is a digital signal. Through the cooperation of the modulation module and the signal demodulation module in the first coupler, the type information of the active part can be obtained. Since the first coupler and the second coupler transmit digital signals, the reliability of the transmission of the characteristic signal is improved.

[0040] In addition, since the structure of the coupling device of the food processor is based on the modulation and demodulation of the characteristic signal to identify the type of the active component, there is no limit on the number of types of active components, and the application is more convenient and extensive.

[0041] The structure of the coupling device of the food processor makes it possible to reduce the number of terminals for docking between the first coupler and the second coupler, that is, only one pair of terminals is required. The small number of terminals also improves the reliability of the connection between the first coupler and the second coupler.

[0042] The food processor using the coupling device has unlimited number of moving parts and high working reliability.

[0043] The working method of this food processor is more intelligent. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 4 is a module diagram of a coupling device of a food processor in an embodiment of the present invention.

[0045] Figure 2 4 is a circuit diagram of a coupling device of a food processor in an embodiment of the present invention. DETAILED DESCRIPTION

[0046] The present invention is further described in detail below with reference to the accompanying drawings.

[0047] like Figure 1 and Figure 2As shown, the coupling device of the food processor in this embodiment includes a first coupler 100 disposed on the base of the food processor, a second coupler 200 disposed on the movable part of the food processor, and a first control chip 300 electrically connected to the first coupler 100. The first coupler 100 and the second coupler 200 can be coupled to each other. The first control chip 300 can be the overall control chip of the food processor, or can be an independent control chip disposed in the first coupler 100.

[0048] The first coupler 100 includes a signal demodulation module 101 electrically connected to the signal receiving end of the first control chip 300, the first coupler 100 has a first connection terminal group electrically connected to the signal demodulation module 101, and the first coupler 100 also includes a power supply module electrically connected to the first control chip 300, the signal demodulation module 101, and the first connection terminal group respectively.

[0049] The second coupler 200 includes a second control chip 201 and a signal modulation module 202 electrically connected to the signal transmitting end of the second control chip 201. The second coupler 200 has a second connection terminal group electrically connected to the signal modulation module 202, and the second connection terminal group can be coupled and connected with the first connection terminal group. The second coupler 200 also includes a power supply module 203 electrically connected to the second control chip 201, the signal modulation module 202, and the second connection terminal group. The power supply module 203 can be charged by the power supply module, so that the power supply module 203 supplies power to the signal modulation module 202 and the second control chip 201. In this way, there is no need to set up an additional power supply in the movable part. The movable part is plugged into the base, so that the first connection terminal group and the second connection terminal group are docked and coupled, and the second control chip 201 and the modulation module in the movable part can be powered, which is more convenient to use.

[0050] The power module can be a DC power module, but the power module in this embodiment is a PWM AC power module 102. The first connection terminal group includes a first ground terminal PE1 and a first power terminal S1, the first ground terminal PE1 is grounded through a third capacitor C3, the signal demodulation module 101 is electrically connected to the first ground terminal PE1, and the first power terminal S1 is electrically connected to the power module. The second connection terminal group includes a second ground terminal PE2 that can be coupled to the first ground terminal PE1, a second power terminal S2 that can be coupled to the first power terminal S1, the second ground terminal PE2 is electrically connected to the power supply module 203 and the signal modulation module 202, the second power terminal S2 is electrically connected to the power supply module 203 through the first diode D1, and the second power terminal S2 is electrically connected to the positive electrode of the first diode D1, the second power terminal S2 is electrically connected to the modulation module through the second diode D2, and the second power terminal S2 is electrically connected to the negative electrode of the second diode D2.

[0051] Usually, the first connection terminal group of the first coupler 100 and the second connection terminal group of the second coupler 200 are made of copper material to ensure good conductivity. However, if direct current is passed through the first coupler 100 and the second coupler 200, if water is connected between the first power terminal S1 and the first ground terminal PE1, or if water is connected between the second power terminal S2 and the second ground terminal PE2 when power is turned on, electrolysis reaction will occur. In this embodiment, the power module adopts a PWM AC power module 102. If the first coupler 100 and the second coupler 200 are AC, even if water is connected between the first power terminal S1 and the first ground terminal PE1, or if water is connected between the second power terminal S2 and the second ground terminal PE2 when power is turned on, ionization and electroplating reactions will occur at the same time, thereby ensuring the integrity of each terminal and extending the service life of the terminal. And within the safe voltage range, the first coupler 100 and the second coupler 200 can work normally even if they are used in a water environment. This makes the application range of the food processor coupling device wider.

[0052] In addition, the third capacitor C3 is provided to isolate direct current, thereby ensuring that the direct current voltage component between the first connection terminal group and the second connection terminal group is close to 0, and minimizing the electrolytic corrosion between the weak current metal terminals of the coupler.

[0053] In this embodiment, the parameters of the AC power output by the PWM AC power module 102 are: a duty cycle of 50%, a frequency of 10kHZ to 150kHZ, and a voltage of 3.3V to 36V. The preferred frequency is 125kHZ and the voltage is 12V.

[0054] like Figure 2As shown, the specific circuit of the coupling device of the food processor in this embodiment is as follows: the PWM AC power supply module 102 includes a sixth resistor R6, an eleventh resistor R11, a fourth resistor R4, a seventh transistor T7, an eighth resistor R8, a second transistor T2, a fifth transistor T5, and a first resistor R1. The first end of the sixth resistor R6 is electrically connected to the PWM signal output end of the first control chip 300, the second end of the sixth resistor R6 is electrically connected to the first end of the eleventh resistor R11, and the second end of the eleventh resistor R11 is grounded. The base of the seventh transistor T7 is electrically connected to the second end of the sixth resistor R6, the emitter of the seventh transistor T7 is grounded, the collector of the seventh transistor T7 is electrically connected to the first end of the fourth resistor R4, and the second end of the fourth resistor R4 is electrically connected to the power output end of the first control chip 300. The collector of the second triode T2 is electrically connected to the power output terminal of the first control chip 300, the base of the second triode T2 is electrically connected to the first end of the eighth resistor R8, the emitter of the second triode T2 is electrically connected to the first end of the first resistor R1, and the second end of the first resistor R1 is electrically connected to the first power-on terminal S1. The emitter of the fifth triode T5 is electrically connected to the emitter of the second triode T2, the collector of the fifth triode T5 is grounded, the base of the fifth triode T5 is electrically connected to the second end of the eighth resistor R8, and the first end of the eighth resistor R8 is also electrically connected to the first end of the fourth resistor R4.

[0055] The signal demodulation module 101 includes a second resistor R2, a first capacitor C1, a third transistor T3, a seventh resistor R7, a ninth resistor R9, a tenth resistor R10, and a sixth transistor T6. The second resistor R2 is electrically connected to the first end of the first resistor R1, and the second end of the second resistor R2 is grounded through the first capacitor C1. The emitter of the third transistor T3 is electrically connected to the second end of the second resistor R2, the base of the third transistor T3 is electrically connected to the first end of the seventh resistor R7, the second end of the seventh resistor R7 is electrically connected to the third capacitor C3, the collector of the third transistor T3 is electrically connected to the first end of the ninth resistor R9, and the second end of the ninth resistor R9 is electrically connected to the base of the sixth transistor T6. One end of the tenth resistor is electrically connected to the second end of the ninth resistor R9, and the other end of the tenth resistor is grounded. The emitter of the sixth transistor T6 is grounded, and the collector of the sixth transistor T6 is electrically connected to the signal receiving end of the first control chip 300.

[0056] The third capacitor C3 and the seventh resistor R7 can form a low-pass filter to detect the modulation signal input by the modulation module, so that the third capacitor C3 is used as a DC isolation capacitor and a detection capacitor at the same time. The AC power output by the PWM AC power supply module 102 generates a DC reference voltage on the first capacitor C1 through the second resistor R2, and the detection signal output by the first end of the seventh resistor R7 passes through a simple level comparison circuit composed of the third transistor T3 and the sixth transistor T6 to complete the demodulation of the modulation signal.

[0057] The power supply module 203 includes a first voltage zener diode ZD1, a first electrolytic capacitor EC1, and a second capacitor C2. The anode of the first voltage zener diode ZD1 is grounded and electrically connected to the second ground terminal PE2, and the cathode of the first voltage zener diode ZD1 is electrically connected to the cathode of the first diode D1. The anode of the first electrolytic capacitor EC1 is electrically connected to the cathode of the first diode D1, and the cathode of the first electrolytic capacitor EC1 is grounded and electrically connected to the second ground terminal PE2. One end of the second capacitor C2 is electrically connected to the power output end of the second control chip 201 and to the cathode of the first diode D1, and the other end of the second capacitor C2 is grounded and electrically connected to the second ground terminal PE2.

[0058] The signal modulation module 202 includes a third resistor R3, a first transistor T1, a fourteenth resistor R14, a fifth resistor R5, a fourth transistor T4, a second voltage zener diode ZD2, and a third voltage zener diode ZD3. The first end of the third resistor R3 is electrically connected to the signal output end of the second control chip 201, the second end of the third resistor R3 is electrically connected to the base of the first transistor T1, the emitter of the first transistor T1 is electrically connected to the negative electrode of the first diode D1, the collector of the first transistor T1 is electrically connected to the first end of the fourteenth resistor R14, and the second end of the fourteenth resistor R14 is electrically connected to the emitter of the fourth transistor T4. The first end of the fifth resistor R5 is electrically connected to the collector of the first transistor T1, and the second end of the fifth resistor R5 is electrically connected to the base of the fourth transistor T4. The collector of the fourth transistor T4 is grounded and electrically connected to the second ground terminal PE2, and the emitter of the fourth transistor T4 is electrically connected to the positive electrode of the second diode D2. The anode of the second Zener diode ZD2 is electrically connected to the anode of the second diode D2 , the anode of the third Zener diode ZD3 is electrically connected to the cathode of the second Zener diode ZD2 , and the cathode of the third Zener diode ZD3 is grounded and electrically connected to the second ground terminal PE2 .

[0059] When working, the signal output terminal TX of the second control chip 201 outputs a characteristic signal, and the characteristic signal is a digital signal formed by a free combination of high and low levels. When the signal output terminal TX of the second control chip 201 outputs a high level, after the modulation circuit acts, the voltage on the third capacitor C3 is A. When the signal output terminal TX of the second control chip 201 outputs a low level, after the modulation circuit acts, the voltage on the third capacitor C3 is B. In this way, the modulation circuit uses the difference and change of the load when the PWM AC power supply module 102 outputs forward and reverse currents to achieve modulation of the characteristic signal. For example, if the characteristic signal is a digital signal of 01110010, the voltage on the third capacitor C3 corresponds to BAAABBAB. In this way, the modulated signal is formed and input to the demodulation module in the first coupler 100, and is demodulated by the demodulation module and output from the collector end of the sixth transistor T6 to the signal input terminal TX-OD of the first control chip 300. The first control chip 300 can obtain the corresponding characteristic signal information after analyzing the demodulated signal. The power frequency of the AC power output by the aforementioned PWM AC power module 102 is relatively high, while the characteristic signal frequency is designed to be much lower than the power frequency, such as being set to 200HZ. The characteristic signal is transmitted digitally, which avoids the problem that the analog signal cannot be detected when it is distorted during transmission in the terminal, and improves the reliability of the characteristic signal transmission.

[0060] In the coupling device of the aforementioned food processor, the second control module and the signal modulation module 202 are respectively arranged in the second coupler 200 arranged in the movable part, so that the second control modules in different movable parts can output different characteristic signals to the signal modulation module 202. The characteristic signal is a digital signal, and the type information of the movable part can be obtained through the cooperation between the modulation module and the signal demodulation module 101 in the first coupler 100. Since the first coupler 100 and the second coupler 200 transmit digital signals, the reliability of the transmission of the characteristic signal is improved.

[0061] In addition, since the structure of the coupling device of the food processor is based on the modulation and demodulation of the characteristic signal to identify the type of the active component, there is no limit on the number of types of active components, and the application is more convenient and extensive.

[0062] The structure of the coupling device of the food processor makes the number of terminals for docking between the first coupler 100 and the second coupler 200 very small, that is, only one pair of terminals is needed, through which both power supply to the first coupler 100 and transmission of characteristic signals are realized. The small number of power supply terminals also improves the reliability of the connection between the first coupler 100 and the second coupler 200.

[0063] The food processor using the aforementioned coupling device comprises a base, at least two movable parts that can be matched and mounted on the base, and the aforementioned coupling device. The base is provided with the aforementioned first coupler 100, and each movable part is provided with the aforementioned second coupler 200.

[0064] The food processor can be any food processor capable of processing food, such as a soybean milk machine, a grinder, a blender, an electric cooking pot, or any other food processor that requires at least two containers to be matched. The food processor can automatically identify the container type and has no limit on the number of container types that can be identified.

[0065] The working method of the food processor is as follows: when a movable component is installed on the base, the second coupler 200 in the movable component is coupled and connected to the first coupler 100 in the base and electrically connected. The second control chip 201 in the second coupler 200 outputs the stored characteristic signal to the signal modulation module 202, and the signal modulation module 202 modulates the characteristic signal to form an adjustment signal, and the modulated signal is output to the signal demodulation module 101 in the first coupler 100. The signal demodulation module 101 demodulates the modulated signal and outputs it to the first control chip 300. The first control chip 300 obtains the demodulated signal and analyzes and calculates it, and then obtains the movable component type information corresponding to the characteristic signal. The food processor works according to the working procedure corresponding to the movable component type information.

[0066] The characteristic signals output by the second control chip 201 of the second coupler 200 in each movable component are different, so through the above method, different characteristic information can realize the acquisition of information of different component types. The working method of the food processor is more intelligent.

Claims

1. A coupling device for a food processor, comprising a first coupler (100) arranged on a base of the food processor, and a second coupler (200) arranged on a movable part of the food processor, wherein the first coupler (100) and the second coupler (200) can be coupled to each other, and characterized in that: It also includes a first control chip (300) electrically signal-connected to the first coupler (100); The first coupler (100) comprises a signal demodulation module (101) electrically connected to a signal receiving end of the first control chip (300), and the first coupler (100) has a first connection terminal group electrically connected to the signal demodulation module (101); The second coupler (200) comprises a second control chip (201) and a signal modulation module (202) electrically connected to a signal transmitting end of the second control chip (201); the second coupler (200) has a second connection terminal group electrically connected to the signal modulation module (202); the second connection terminal group can be coupled to the first connection terminal group; The first coupler (100) further comprises a power supply module electrically connected to the first control chip (300), the signal demodulation module (101), and the first connection terminal group, respectively; the second coupler (200) further comprises a power supply module electrically connected to the second control chip (201), the signal modulation module (202), and the second connection terminal group; The power supply module is a PWM AC power supply module (102); The first connection terminal group comprises a first grounding terminal (PE1) and a first power-on terminal (S1), the first grounding terminal (PE1) is grounded via a third capacitor (C3), the signal demodulation module (101) is electrically connected to the first grounding terminal (PE1), and the first power-on terminal (S1) is electrically connected to the power supply module; The second connection terminal group comprises a second grounding terminal (PE2) that can be coupled to the first grounding terminal (PE1), and a second power-on terminal (S2) that can be coupled to the first power-on terminal (S1); the second grounding terminal (PE2) is electrically connected to the power supply module (203) and the signal modulation module (202); the second power-on terminal (S2) is electrically connected to the power supply module (203) through the first diode (D1), and the second power-on terminal (S2) is electrically connected to the positive electrode of the first diode (D1); the second power-on terminal (S2) is electrically connected to the modulation module through the second diode (D2), and the second power-on terminal (S2) is electrically connected to the negative electrode of the second diode (D2); The PWM AC power supply module (102) comprises a sixth resistor (R6), an eleventh resistor (R11), a fourth resistor (R4), a seventh transistor (T7), an eighth resistor (R8), a second transistor (T2), a fifth transistor (T5), and a first resistor (R1); The first end of the sixth resistor (R6) is electrically connected to the PWM signal output end of the first control chip (300), the second end of the sixth resistor (R6) is electrically connected to the first end of the eleventh resistor (R11), and the second end of the eleventh resistor (R11) is grounded; The base of the seventh transistor (T7) is electrically connected to the second end of the sixth resistor (R6), the emitter of the seventh transistor (T7) is grounded, the collector of the seventh transistor (T7) is electrically connected to the first end of the fourth resistor (R4), and the second end of the fourth resistor (R4) is electrically connected to the power output end of the first control chip (300); The collector of the second triode (T2) is electrically connected to the power output end of the first control chip (300), the base of the second triode (T2) is electrically connected to the first end of the eighth resistor (R8), the emitter of the second triode (T2) is electrically connected to the first end of the first resistor (R1), and the second end of the first resistor (R1) is electrically connected to the first power-on terminal (S1); The emitter of the fifth triode (T5) is electrically connected to the emitter of the second triode (T2), the collector of the fifth triode (T5) is grounded, the base of the fifth triode (T5) is electrically connected to the second end of the eighth resistor (R8), and the first end of the eighth resistor (R8) is also electrically connected to the first end of the fourth resistor (R4); The signal demodulation module (101) comprises a second resistor (R2), a first capacitor (C1), a third transistor (T3), a seventh resistor (R7), a ninth resistor (R9), a tenth resistor (R10), and a sixth transistor (T6); The second resistor (R2) is electrically connected to a first end of the first resistor (R1), and a second end of the second resistor (R2) is grounded via a first capacitor (C1); The emitter of the third triode (T3) is electrically connected to the second end of the second resistor (R2), the base of the third triode (T3) is electrically connected to the first end of the seventh resistor (R7), the second end of the seventh resistor (R7) is electrically connected to the third capacitor (C3), the collector of the third triode (T3) is electrically connected to the first end of the ninth resistor (R9), and the second end of the ninth resistor (R9) is electrically connected to the base of the sixth triode (T6); One end of the tenth resistor is electrically connected to the second end of the ninth resistor (R9), and the other end of the tenth resistor is grounded; The emitter of the sixth transistor (T6) is grounded, and the collector of the sixth transistor (T6) is electrically connected to the signal receiving end of the first control chip (300).

2. The coupling device for a food processor according to claim 1, characterized in that: The parameters of the alternating current output by the PWM alternating current power supply module (102) are: a duty cycle of 50%, a frequency of 10 kHz to 150 kHz, and a voltage of 3.3 V to 36 V.

3. The coupling device of the food processor according to claim 1 or 2, characterized in that: The power supply module (203) comprises a first voltage stabilizing diode (ZD1), a first electrolytic capacitor (EC1), and a second capacitor (C2); The anode of the first voltage stabilizing diode (ZD1) is grounded and electrically connected to the second grounding terminal (PE2), and the cathode of the first voltage stabilizing diode (ZD1) is electrically connected to the cathode of the first diode (D1); The positive electrode of the first electrolytic capacitor (EC1) is electrically connected to the negative electrode of the first diode (D1), and the negative electrode of the first electrolytic capacitor (EC1) is grounded and electrically connected to the second grounding terminal (PE2); One end of the second capacitor (C2) is electrically connected to the power output end of the second control chip (201) and to the cathode of the first diode (D1), and the other end of the second capacitor (C2) is grounded and electrically connected to the second ground terminal (PE2).

4. The coupling device for a food processor according to claim 3, characterized in that: The signal modulation module (202) comprises a third resistor (R3), a first transistor (T1), a fourteenth resistor (R14), a fifth resistor (R5), a fourth transistor (T4), a second voltage regulator diode (ZD2), and a third voltage regulator diode (ZD3); The first end of the third resistor (R3) is electrically connected to the signal output end of the second control chip (201), the second end of the third resistor (R3) is electrically connected to the base of the first triode (T1), the emitter of the first triode (T1) is electrically connected to the cathode of the first diode (D1), the collector of the first triode (T1) is electrically connected to the first end of the fourteenth resistor (R14), and the second end of the fourteenth resistor (R14) is electrically connected to the emitter of the fourth triode (T4); A first end of the fifth resistor (R5) is electrically connected to the collector of the first transistor (T1), and a second end of the fifth resistor (R5) is electrically connected to the base of the fourth transistor (T4); The collector of the fourth transistor (T4) is grounded and electrically connected to the second ground terminal (PE2), and the emitter of the fourth transistor (T4) is electrically connected to the anode of the second diode (D2); The anode of the second Zener diode (ZD2) is electrically connected to the anode of the second diode (D2), the anode of the third Zener diode (ZD3) is electrically connected to the cathode of the second Zener diode (ZD2), and the cathode of the third Zener diode (ZD3) is grounded and electrically connected to the second grounding terminal (PE2).

5. A food processor, comprising a base and at least two movable parts that can be matched and mounted on the base, characterized in that: It also comprises the coupling device according to any one of claims 1 to 4, wherein a first coupler (100) is arranged on the base, and a second coupler (200) is arranged on each movable component.

6. A method for operating a food processor as claimed in claim 5, characterized in that: When a movable component is mounted on the base, the second coupler (200) in the movable component is coupled and connected to the first coupler (100) in the base and is electrically conductive; The second control chip (201) in the second coupler (200) outputs the stored characteristic signal to the signal modulation module (202), the signal modulation module (202) modulates the characteristic signal to form an adjustment signal, and the modulated signal is output to the signal demodulation module (101) in the first coupler (100); The signal demodulation module (101) demodulates the modulated signal and outputs it to the first control chip (300); the first control chip (300) acquires the demodulated signal and performs analysis and calculation to acquire the type information of the active component corresponding to the characteristic signal; The food processor operates according to the working program corresponding to the type information of the active parts.

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