Food processor

Abstract

The utility model discloses a food processor. The food processor comprises a main machine, a cup body, a coupler and a wireless transmission module, the coupler comprises a first coupling part and a second coupling part, the first coupling part is located on the main machine, and the second coupling part is located on the cup body. The first coupling part and the second coupling part are used for coupling connection when the cup body is placed on the main machine, and the coupler is used for transmitting a strong electric signal; the wireless transmission module comprises a host decoding module and a cup body sending module; the host decoding module is located at the host; the cup body sending module is located at the cup body; a wireless communication mode is adopted between the cup body sending module and the host decoding module, and the wireless transmission module is used for transmitting weak current signals.

Description

Technical Field

[0001] The utility model relates to the technical field of food processing, in particular to a food processing machine. Background Art

[0002] Food processors all have heating and stirring and crushing functions. In order to power the heating device and transmit weak current signals at the same time, the main unit and cup body of most current food processors are electrically connected through a coupler, such as a six-pin coupler or electromagnetic coupler. For example, Chinese utility model patent CN203378961U discloses a safe, reliable, and beautiful electromagnetic heating soybean milk maker using wireless transmission, which includes a strong current electromagnetic coupler and a weak current signal electromagnetic coupler. The strong current electromagnetic coupler is used to power the motor, and the weak current signal electromagnetic coupler is used to transmit signals between the detection device and the electronic control device. Chinese utility model patent CN202772677U discloses an electromagnetic coupler for food processors, which includes an electric energy transmitter and an electric energy receiver. Electric energy is transmitted through a high-frequency electromagnetic coupler. However, there are some problems with this electromagnetic coupler:

[0003] (1) Whether a six-pin coupler or an electromagnetic coupler that separates weak current signals from strong current signals is used, its size is relatively large. When applied to a small cup structure, it will take up too much space, making the structural layout more difficult; (2) When a six-pin coupler is used, the electrical gap and the distance between the strong and weak current structures need to be reasonably arranged, and the wiring inside the coupler needs to be strengthened with insulation protection, which leads to a certain increase in cost; (3) Since the six-pin coupler includes both strong current and weak current structures, when the cup body is cleaned, water can easily flow into the coupler or the heating device, causing high voltage electricity to be introduced from the heating wire into the weak current structure, resulting in inaccurate NTC temperature measurement and damage to the overflow control board.

[0004] Therefore, how to provide a food processing machine with small size, simple layout, high stability and low cost has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a food processing machine to solve the problems of the existing coupler being large in size, the strong current being transmitted into the weak current structure due to water in the cup body, thereby causing damage to the control board, and the high cost of isolating the strong and weak currents of the coupler.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A food processing machine includes a main unit, a cup body, a coupler, and a wireless transmission module; the coupler includes a first coupling component and a second coupling component, the first coupling component is located on the main unit, and the second coupling component is located on the cup body; the first coupling component and the second coupling component are used to couple when the cup body is placed on the main unit, and the coupler is used to transmit strong electric signals; the wireless transmission module includes a main unit decoding module and a cup body sending module; the main unit decoding module is located on the main unit, and the cup body sending module is located on the cup body; wireless communication is used between the cup body sending module and the main unit decoding module, and the wireless transmission module is used to transmit weak electric signals.

[0008] Furthermore, the number of PINs of the coupler is N, where N≤3.

[0009] Furthermore, the cup body sending module and the host decoding module communicate with each other via wireless radio frequency.

[0010] Furthermore, the host decoding module includes: a first main control unit, which sends a radio frequency signal; a radio frequency gain driving circuit, connected to the first main control unit, which receives the radio frequency signal and amplifies the radio frequency signal; a receiving coil, connected to the radio frequency gain driving circuit, which transmits the amplified radio frequency signal to the cup body sending module and supplies power to the cup body sending module.

[0011] Furthermore, the cup body sending module includes: a sending coil, which is used to wirelessly couple with the receiving coil and receive radio frequency signals; a load modulation module, connected to the sending coil, which is used to load modulate the radio frequency signal; a rectifier and filter module, which is used to rectify and filter the load-modulated radio frequency signal; a second main control unit, which is connected to the rectifier and filter module; the sending coil receives the radio frequency signal and induces a voltage, and load modulates the radio frequency signal through the load modulation module and rectifies and filters the rectifier and filter module in turn to power the second main control unit.

[0012] Furthermore, the cup body sending module also includes: a signal acquisition unit, the signal acquisition unit is connected to the second main control unit, and the signal acquisition unit is used to collect weak current signals; the second main control unit is also used to receive weak current signals and transmit the weak current signals to the load modulation module after AD conversion; the load modulation module is also used to load modulate the weak current signals and send them to the host decoding module through the transmitting coil.

[0013] Furthermore, the host decoding module also includes: a detection circuit, connected to the receiving coil and the RF gain driving circuit, for demodulating the weak current signal after load modulation; an amplification and shaping circuit, connected between the detection circuit and the second main control unit, for amplifying and shaping the demodulated weak current signal, and transmitting it to the second main control unit.

[0014] Furthermore, the RF gain driving circuit includes: a first transistor, the collector of the first transistor is connected to the power input end; a second transistor, the collector of the second transistor is grounded, the base of the second transistor is connected to the base of the first transistor, the emitter of the second transistor is connected to the emitter of the first transistor, and one end of the receiving coil is connected to the emitter of the first transistor and the emitter of the second transistor; a first resistor, one end of which is connected to the first main control unit, and the other end is connected to the base of the first transistor and the second transistor; a first capacitor, one end of which is connected to the other end of the receiving coil, and the other end is connected to the collector of the second transistor.

[0015] Furthermore, the signal acquisition unit includes a temperature sensor, an anti-overflow electrode or a cover-opening sensor, the temperature sensor is used to detect a temperature signal, the anti-overflow electrode is used to detect an anti-overflow signal, and the cover-opening sensor is used to detect a cover-opening signal.

[0016] Furthermore, the sensing distance between the receiving coil and the transmitting coil is 4 mm to 30 mm.

[0017] The beneficial effects of the embodiments of the present utility model are:

[0018] 1. The present application provides a food processing machine, which is equipped with a coupler and a wireless transmission module. The coupler is used to transmit strong electric signals, and the wireless transmission module is used to transmit weak electric signals. By adopting the method of using the coupler to transmit electric energy and the wireless transmission module to transmit weak electric signals, the volume of the coupler can be simplified, the occupied space can be reduced, the layout of the internal components of the food processing machine can be simplified, and the cost can be reduced.

[0019] 2. This application safely isolates strong electricity from weak electricity by setting up a wireless transmission module and a coupler. On the one hand, it can prevent strong electricity from entering the weak electricity structure when water enters the cup body, causing damage to the control board, thereby improving the stability of the food processor. On the other hand, there is no need to make a safety isolation circuit for the control board of the host, which simplifies the circuit of the control board, saves time and reduces costs.

[0020] 3. This application adopts a wireless transmission module to transmit weak current signals and encapsulates it in the host and the cup body, which can avoid the influence of dirt or oxidation on signal transmission caused by the contact between the couplers, thereby improving the accuracy and stability of signal transmission.

[0021] 4. The wireless transmission module provided in this application can realize the transmission of multiple weak current signals, can detect the working status of the food processing machine based on the multiple weak current signals, and improve the stability and efficiency of the production process of the food processing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments of the present application.

[0023] Figure 1 This is a structural schematic diagram of a food processing machine according to an embodiment of the present application;

[0024] Figure 2 A top view of a main body of a food processing machine according to an embodiment of the present application;

[0025] Figure 3 A bottom view of a cup body of a food processor according to an embodiment of the present application;

[0026] Figure 4 This is a structural diagram of a host decoding module and a cup sending module of a food processing machine according to an embodiment of the present application;

[0027] Figure 5 This is a circuit schematic diagram of a host decoding module of a food processing machine according to an embodiment of the present application;

[0028] Figure 6 This is a circuit schematic diagram of a cup sending module of a food processing machine according to an embodiment of the present application;

[0029] Figure 7 This is a signal output waveform diagram of a host decoding module of a food processing machine shown in one embodiment of the present application;

[0030] Figure 8 This is a signal output waveform diagram after the host decoding module and the cup body sending module of the food processing machine are coupled together according to an embodiment of the present application;

[0031] Figure 9 A circuit diagram of a radio frequency gain driving circuit for a food processing machine according to an embodiment of the present application;

[0032] Figure 10 A circuit diagram of a detection circuit of a food processing machine according to an embodiment of the present application;

[0033] Figure 11 This is a circuit diagram of an amplifying and shaping circuit of a food processor according to an embodiment of the present application.

[0034] Figure numerals: 1-host; 2-cup body; 3-coupler; 31-first coupler component; 32-second coupler component; 4-wireless transmission module; 41-host decoding module; 411-first main control unit; 412-RF gain driving circuit; 413-receiving coil; 414-detection circuit; 415-amplification and shaping circuit; 42-cup body transmitting module; 421-transmitting coil; 422-load modulation module; 423-rectifier and filter module; 424-second main control unit; 425-signal acquisition unit. DETAILED DESCRIPTION

[0035] In the description of this application, it should be noted that the terms "inner" and "outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended solely to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0036] The purpose of the utility model is to provide a food processing machine to solve the problems of the existing coupler being large in size, strong electricity being transmitted into the weak electricity structure due to water in the cup body, thereby causing damage to the control board, and the high cost of isolating the strong and weak electricity of the coupler.

[0037] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0038] See also Figure 1 -3. A food processing machine includes a main unit 1, a cup body 2, a coupler 3 and a wireless transmission module 4, wherein the cup body 2 is detachably mounted on the main unit 1.

[0039] The coupler 3 includes a first coupler component 31 and a second coupler component 32. The first coupler component 31 is located on the host 1, and the second coupler component 32 is located on the cup body 2. The first coupler component 31 and the second coupler component 32 are arranged correspondingly. The first coupler component 31 and the second coupler component 32 are used to couple and connect when the cup body 2 is placed on the host 1. The coupler 3 is used to transmit strong electrical signals.

[0040] The wireless transmission module 4 includes a host decoding module 41 and a cup sending module 42. The host decoding module 41 is located in the host 1, and the cup sending module 42 is located in the cup 2. Wireless communication is adopted between the cup sending module 42 and the host decoding module 41. The wireless transmission module 4 is used to transmit weak current signals.

[0041] By adopting the wireless transmission module 4 and the coupler 3 to transmit signals between the cup body 2 and the host 1, the structure and volume of the coupler 3 are simplified. At the same time, on the one hand, the weak current signal and the strong current signal are isolated, which can prevent the strong current signal from entering the weak current signal when there is water in the cup body 2, thereby causing inaccurate NTC temperature measurement and damage to the control board; on the other hand, the weak current signal is transmitted using the wireless transmission module 4, and there is no need to perform safety isolation protection on the control board of the host 1, which not only reduces the cost but also simplifies the control board circuit.

[0042] In this embodiment, the coupler 3 transmits the strong electric signal of the food processing machine, and the number of PINs of the coupler 3 is N, where N≤3.

[0043] The coupler 3 can be in the shape of a straight line or a triangle. In this embodiment, the coupler 3 is described as being in the shape of a straight line.

[0044] A power supply module for providing electrical energy and a heating device for heating food (not shown in the figure) are provided in the food processor. The coupler 3 connects the heating device and the power supply module through a heating live wire, a heating neutral wire and a ground wire to supply power to the heating device.

[0045] The cup body transmission module 42 and the host decoding module 41 communicate via radio frequency to transmit weak current signals. These signals are wirelessly coupled and transmitted using low-frequency RFID (a radio-based automatic identification technology). The cup body transmission module 42 and the host decoding module 41 are respectively located in the cup body 2 and the host 1, preventing them from contacting each other or leaking out. This prevents contamination or oxidation of the coupler 3 from interfacing with each other, improving the accuracy and stability of signal transmission and preventing water from entering the coupler 3 and affecting the wireless transmission module 4.

[0046] The cup body sending module 42 and the host decoding module 41 can realize the transmission of multiple weak electrical signals, such as temperature signal, cover opening signal, anti-overflow signal, cup body signal, etc. To this end, multiple signal channels can be reserved on the communication protocol of the host 1 to realize the transmission of multiple weak electrical signals to meet the needs of various application scenarios. At the same time, the working status of the food processing machine can be detected according to the multiple weak electrical signals to improve the stability and efficiency of the food processing machine production process.

[0047] See also Figure 4 -6. In this embodiment, the host decoding module 41 includes a first main control unit 411 , a radio frequency gain driving circuit 412 and a receiving coil 413 .

[0048] The RF gain driving circuit 412 is connected to the output end of the first main control unit 411 , and the receiving coil 413 is connected to the RF gain driving circuit 412 .

[0049] The first main control unit 411 sends an RF signal to the RF gain driving circuit 412. The RF gain driving circuit 412 receives the RF signal and amplifies the RF signal. The receiving coil 413 receives the amplified RF signal and transmits it to the cup body sending module 42 coupled to the host decoding module 41 to power the cup body sending module 42.

[0050] Correspondingly, a transmitting coil 421 wirelessly coupled to the receiving coil 413 is provided in the cup body transmitting module 42 for receiving the above-mentioned radio frequency signal.

[0051] The cup body transmitting module 42 further includes a load modulation module 422 , a rectifier filter module 423 and a second main control unit 424 . The transmitting coil 421 and the receiving coil 413 provide electrical energy to the second main control unit 424 by forming magnetic coupling resonance.

[0052] Specifically, the transmitting coil 421 is wirelessly coupled to the receiving coil 413 and receives the radio frequency signal transmitted by the receiving coil 413 .

[0053] The load modulation module 422 is connected to the transmitting coil 421 , the rectification and filtering module 423 is connected to the output end of the load modulation module 422 , and the second main control unit 424 is connected to the output end of the rectification and filtering module 423 .

[0054] After receiving the RF signal, the transmitting coil 421 induces a voltage, and the load modulation module 422 load modulates the RF signal, and the rectification and filtering module 423 rectifies and filters the load-modulated RF signal to supply power to the second main control unit 424.

[0055] Among them, in order to ensure the accuracy of coupling between the receiving coil 413 and the transmitting coil 421, the sensing distance between the receiving coil 413 and the transmitting coil 421 is set to 4mm-30mm. When the sensing distance is greater than 30mm, the magnetic field energy of the transmitting coil 421 farther away from the receiving coil 413 is weaker and cannot couple sufficient magnetic field energy, which can easily lead to insufficient power supply to the cup body sending module 42 and is not conducive to signal transmission between the receiving coil 413 and the transmitting coil 421.

[0056] The cup body sending module 42 also includes a signal acquisition unit 425, which is connected to the second main control unit 424. The signal acquisition unit 425 is used to collect weak current signals. The second main control unit 424 is used to receive weak current signals and transmit the weak current signals to the load modulation module 422 for load modulation after AD conversion (i.e., digital-to-analog conversion). The load modulation module 422 load modulates the weak current signal and sends it to the host decoding module 41 through the transmitting coil 421, which is used to control the food processor according to the weak current signal through the host decoding module 41 to realize heating and stirring functions.

[0057] Among them, the above-mentioned signal acquisition unit 425 includes a temperature sensor, an anti-overflow electrode or a lid opening sensor, and the weak current signal includes a temperature signal, an anti-overflow signal and a lid opening signal, etc. The temperature sensor is used to detect the temperature signal, the anti-overflow electrode is used to detect the anti-overflow signal, and the lid opening sensor is used to detect the lid opening signal.

[0058] Correspondingly, the host decoding module 41 is further provided with a detection circuit 414 and an amplification and shaping circuit 415 for processing weak electric signals.

[0059] The detection circuit 414 is connected to the receiving coil 413 and the RF gain driving circuit 412, and is used to demodulate the weak current signal after load modulation. The amplification and shaping circuit 415 is connected between the detection circuit 414 and the first main control unit 411, and is used to amplify and shape the demodulated weak current signal, increase the amplitude of the weak current signal, adjust its shape, and transmit it to the first main control unit 411. The first main control unit 411 decodes the weak current signal after amplification and shaping, and controls the heating and stirring of the food processor through the decoded weak current signal.

[0060] Since the weak current signal collected by the signal acquisition unit 425 is a signal with a small amplitude, it is load modulated by the load modulation module 422, demodulated by the detection circuit 414, and then amplified by the amplification and shaping circuit 415 to increase the amplitude of the signal. The shape of the signal is adjusted by the shaping circuit within the amplification and shaping circuit 415 to improve the accuracy of signal decoding.

[0061] See also Figure 7 -9, the working process of the wireless transmission module 4 is described in detail below:

[0062] When the host decoding module 41 is not connected to the cup body sending module 42, the host decoding module 41 works alone, and the voltage waveform output of the receiving coil 413 is a high-frequency carrier of 125KHz (see Figure 7 ), and the voltage amplitude remains the same. At this time, the detection circuit 414 and the amplification and shaping circuit 415 have no signal output because the receiving coil 413 and the transmitting coil 421 do not generate electromagnetic induction.

[0063] When the cup body sending module 42 is close to the host decoding module 41, the cup body sending module 42 and the host decoding module 41 are wirelessly coupled and transmitted. The second main control unit 424 sends a radio frequency signal to the cup body sending module 42 through the radio frequency gain driving circuit 412 and the receiving coil 413. The sending coil 421 receives the radio frequency signal and induces a voltage. The radio frequency signal is load modulated through load modulation, and the load-modulated radio frequency signal is rectified and filtered by the rectification and filtering module 423 and then transmitted to the second main control unit 424 to power the second main control unit 424.

[0064] After the second main control unit 424 is powered on, it performs AD conversion on the temperature signal, overflow prevention signal, lid opening signal, etc. collected by the signal acquisition unit 425, and performs load modulation on them through the load modulation module 422. The sending coil 421 transmits the above-mentioned weak current signal after load modulation to the cup body sending module 42, and the receiving coil 413 receives the weak current signal and induces voltage. The waveform changes to Figure 8 As shown, the weak electric signal is finally decoded by the detection circuit 414, the amplification and shaping circuit 415 and the second main control unit 424 in sequence, and then the food processor is controlled to perform corresponding operations.

[0065] See also Figure 9 The RF gain driving circuit 412 includes a first transistor Q1, a second transistor Q2, a first resistor R8 and a first capacitor C4.

[0066] The collector of the first transistor Q1 is connected to the power input end to supply power to the first transistor Q1; the collector of the second transistor Q2 is grounded, the base of the second transistor Q2 is connected to the base of the first transistor Q1, the emitter of the second transistor Q2 is connected to the emitter of the first transistor Q1, and one end of the receiving coil 413 is connected to the emitter of the first transistor Q1 and the emitter of the second transistor Q2.

[0067] The first transistor Q1 is an NPN transistor, and the second transistor Q2 is a PNP transistor.

[0068] One end of the first resistor R8 is connected to the first main control unit 411, and the other end of the first resistor R8 is connected to the base of the first transistor Q1 and the second transistor Q2, which is used to provide a bias voltage to ensure the normal operation of the circuit, and to form a negative feedback circuit to stabilize the output of the circuit, thereby improving the stability of the RF gain driving circuit 412.

[0069] One end of the first capacitor C4 is connected to the other end of the receiving coil 413 , and the other end of the first capacitor C4 is connected to the collector of the second transistor Q2 .

[0070] The RF gain driving circuit 412 is used to convert the 125KHz high frequency carrier signal sent by the first main control unit 411 into a 125KHz square wave signal and perform power amplification on the square wave signal.

[0071] When the radio frequency signal sent by the first main control unit 411 is a high-level signal, the bases of the first transistor Q1 and the second transistor Q2 are also high-level, the first transistor Q1 is turned on, and the second transistor Q2 is turned off. Current flows from the power input end through the collector of the first transistor Q1 and the emitter of the first transistor Q1 and outputs a low-level signal.

[0072] When the RF signal sent by the first main control unit 411 is a low level signal, the bases of the first transistor Q1 and the second transistor Q2 are also low level, the second transistor Q2 is turned on, the first transistor Q1 is turned off, and the output end of the RF gain driving circuit 412 outputs a high level signal.

[0073] Through the above process, the RF gain driving circuit 412 can perform inverse amplification on the signal input therein and output an amplified inverse signal.

[0074] See also Figure 10 The detection circuit 414 includes a second resistor R9, a third resistor R10, a fourth resistor R11, a diode D2, a second capacitor C5, a third capacitor C3 and a fourth capacitor C6.

[0075] Among them, the second resistor R9 and the diode D2 are connected in series to the first output end of the RF gain driving circuit 412 in sequence, the third resistor R10 and the second capacitor C5 are connected in parallel to the first output end and the second output end of the RF gain driving circuit 412 in sequence, the first port of the third capacitor C3 is connected to the diode D2, the second port of the third capacitor C3 is connected to the amplification and shaping circuit 415, and the two ends of the fourth capacitor C6 and the fourth resistor R11 in parallel are respectively connected to the second port of the third capacitor C3 and the RF gain driving circuit 412.

[0076] The detection circuit 414 set up as described above is used to convert the weak current signal after load modulation into a demodulated signal. Specifically, for the DC component in the weak current signal after load modulation, the weak current signal after load modulation is rectified by the diode D2 to remove the carrier, and the weak current signal after filtering is passed through the third capacitor C3. The DC component in the weak current signal is mainly filtered out under the coupling action of the third capacitor C3 to obtain the required useful signal, that is, the demodulated signal, and the demodulated signal is transmitted to the amplification and shaping circuit 415.

[0077] See also Figure 11 The amplification and shaping circuit 415 includes an amplification circuit and a shaping circuit connected in sequence, the amplification circuit includes a first operational amplifier U1A, the shaping circuit is connected to the output end of the first operational amplifier U1A, the shaping circuit includes a comparison circuit and a second operational amplifier U1B, the comparison circuit includes a series circuit of a fifth resistor R1, a sixth resistor R3 and a seventh resistor R7, and the output end of the shaping circuit is connected to the first main control unit 411.

[0078] Pin 3 of the first operational amplifier U1A is connected to the output end of the detection circuit 414, and pin 5 of the second operational amplifier U1B is connected to the output end of the first operational amplifier U1A through the eighth resistor R2. The signal after shaping by the first operational amplifier U1A is connected to the input pin 5 of the second operational amplifier U1B, and pin shuru6 of the second operational amplifier U1B is connected to the power supply through the ninth resistor R5. The second operational amplifier U1B acts as a voltage comparator, and compares the voltage value of input pin 5 with the voltage value of input pin 6. If the voltage value of input pin 5 is higher than the voltage value of input pin 6, the second operational amplifier U1B outputs a high-level signal to the first main control unit 411. Conversely, if the voltage value of input pin 5 is lower than the voltage value of input pin 6, the second operational amplifier U1B outputs a low-level signal to the first main control unit 411.

[0079] The first operational amplifier U1A is used to perform signal shaping processing on the weak current signal to increase the amplitude of the signal. The comparison circuit and the second operational amplifier U1B are used to perform signal shaping processing and transmit the adjusted signal to the first main control unit 411.

[0080] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0081] It should be noted that, unless there is any conflict, the features in the embodiments of this application can be combined with each other.

[0082] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A food processing machine, comprising a main machine and a cup body, wherein the cup body is detachably mounted on the main machine, characterized in that: The food processor also includes: A coupler comprising a first coupling component and a second coupling component, wherein the first coupling component is located on the host and the second coupling component is located on the cup body; the first coupling component and the second coupling component are used to couple when the cup body is placed on the host, and the coupler is used to transmit strong electrical signals; A wireless transmission module, comprising a host decoding module and a cup sending module; the host decoding module is located on the host, and the cup sending module is located on the cup; The cup body sending module and the host decoding module adopt wireless communication, and the wireless transmission module is used to transmit weak electric signals.

2. The food processing machine according to claim 1, wherein The number of PINs of the coupler is N, where N≤3.

3. The food processing machine according to claim 1, wherein The cup body sending module communicates with the host decoding module via wireless radio frequency.

4. The food processing machine according to claim 1, wherein The host decoding module includes: A first main control unit sends a radio frequency signal; a radio frequency gain driving circuit connected to the first main control unit, the radio frequency gain driving circuit receiving the radio frequency signal and amplifying the radio frequency signal; The receiving coil is connected to the radio frequency gain driving circuit, transmits the amplified radio frequency signal to the cup body sending module, and supplies power to the cup body sending module.

5. The food processing machine according to claim 4, characterized in that The cup body sending module includes: a transmitting coil, configured to be wirelessly coupled to the receiving coil and receive the radio frequency signal; a load modulation module, connected to the transmitting coil, and configured to perform load modulation on the radio frequency signal; The rectifier and filter module is used to perform rectification and filtering on the load-modulated RF signal; A second main control unit is connected to the rectification and filtering module; The transmitting coil receives the radio frequency signal and induces a voltage, and sequentially performs load modulation on the radio frequency signal through the load modulation module and performs rectification and filtering through the rectification and filtering module to supply power to the second main control unit.

6. The food processing machine according to claim 5, characterized in that The cup sending module also includes: A signal acquisition unit, connected to the second main control unit, and configured to acquire the weak current signal; The second main control unit is further configured to receive the weak current signal and transmit the weak current signal to the load modulation module after AD conversion; The load modulation module is further configured to load modulate the weak current signal and then send the signal to the host decoding module via the transmitting coil.

7. The food processing machine according to claim 6, characterized in that The host decoding module also includes: a detection circuit, connected to the receiving coil and the RF gain driving circuit, for demodulating the weak current signal after the load modulation; The amplification and shaping circuit is connected between the detection circuit and the second main control unit, and is used to amplify and shape the demodulated weak current signal and transmit it to the second main control unit.

8. The food processing machine according to claim 4, characterized in that The radio frequency gain driving circuit comprises: a first transistor, wherein the collector of the first transistor is connected to the power input terminal; a second transistor, wherein the collector of the second transistor is grounded, the base of the second transistor is connected to the base of the first transistor, the emitter of the second transistor is connected to the emitter of the first transistor, and one end of the receiving coil is connected to the emitter of the first transistor and the emitter of the second transistor; a first resistor, one end of which is connected to the first main control unit, and the other end of which is connected to the bases of the first transistor and the second transistor; A first capacitor has one end connected to the other end of the receiving coil, and the other end connected to the collector of the second transistor.

9. The food processing machine according to claim 6, characterized in that The signal acquisition unit includes a temperature sensor, an anti-overflow electrode or a cover-opening sensor, the temperature sensor is used to detect a temperature signal, the anti-overflow electrode is used to detect an anti-overflow signal, and the cover-opening sensor is used to detect a cover-opening signal.

10. The food processor according to claim 5, characterized in that The sensing distance between the receiving coil and the transmitting coil is 4 mm to 30 mm.

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