CN215383414U - Food preparation machine and prevent uncapping circuit thereof - Google Patents
Food preparation machine and prevent uncapping circuit thereof Download PDFInfo
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- CN215383414U CN215383414U CN202120326590.2U CN202120326590U CN215383414U CN 215383414 U CN215383414 U CN 215383414U CN 202120326590 U CN202120326590 U CN 202120326590U CN 215383414 U CN215383414 U CN 215383414U
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- 238000001514 detection method Methods 0.000 claims abstract description 168
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 79
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Abstract
The embodiment of the utility model discloses a food processor and a cover opening prevention circuit thereof, wherein the food processor comprises: the cup body, the cup cover and the main control unit; the open-prevention circuit includes: an iron core position detection circuit and an electromagnet for locking the cup body and the cup cover; the electromagnet comprises a magnet body, an iron core and a coil; the coil is wound on the magnet body, and the magnet body is arranged on the cup body; the iron core is arranged on the cup cover at a position corresponding to the magnet body; the signal acquisition end of the main control unit is connected with the signal output end of the iron core position detection circuit; the iron core position detection circuit is arranged to detect a signal for judging the position of the iron core; the main control unit is used for receiving the signals and judging the relative position of the iron core and the magnet body. Through the scheme of the embodiment, the cup cover and the cup body are locked in place, and the safety of the food processor is improved.
Description
Technical Field
The present invention relates, more particularly, to a food processor and a lid opening prevention circuit thereof.
Background
At present, a lot of frame food preparation machines have appeared in the market, adopt the spiral cover structure, in order to prevent to open, generally can adopt the electro-magnet to lock the bowl cover, do not let the bowl cover open, but to the electro-magnet target in place not detect, in case the electro-magnet is inefficacy, can produce the risk to safety.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a food processor and an anti-uncovering circuit thereof, which can ensure that a cup cover and a cup body are locked in place and improve the safety of the food processor.
An embodiment of the present invention further provides an open-prevention circuit of a food processor, where the food processor may include: the cup body, the cup cover and the main control unit; the open-prevention circuit includes: an iron core position detection circuit and an electromagnet for locking the cup body and the cup cover; the electromagnet comprises a magnet body, an iron core and a coil; the coil is wound on the magnet body, and the magnet body is arranged on the cup body; the iron core is arranged on the cup cover at a position corresponding to the magnet body;
the signal acquisition end of the main control unit is connected with the signal output end of the iron core position detection circuit;
the iron core position detection circuit is configured to detect a signal for judging the position of the iron core;
the main control unit is arranged to receive the signal and judge the relative position of the iron core and the magnet body.
In an exemplary embodiment of the present invention, the core position detecting circuit may include: a coil power supply circuit and an electromagnetic signal detection circuit;
the signal output end of the main control unit is connected with the control signal input end of the coil power supply circuit, and the voltage output end of the coil power supply circuit is connected with the two ends of the coil;
a detection signal output end of the electromagnetic signal detection circuit is used as a signal output end of the iron core position detection circuit and is connected with a first signal acquisition end of the main control unit; the signal acquisition end of the main control unit comprises the first signal acquisition end;
a detection signal input end of the electromagnetic signal detection circuit is used as a signal input end of the iron core position detection circuit, is connected with a voltage input end of the coil and is set to detect a current signal of the coil; or the magnetic field signal is arranged at the magnet body and is used for detecting the magnetic field signal of the electromagnet.
In an exemplary embodiment of the present invention, the coil power supply circuit may include: the driving circuit comprises a triode Q, a first driving resistor R1, a second driving resistor R2 and a diode D;
the base electrode of the triode Q is connected with the first end of the first driving resistor R1;
the second end of the first driving resistor R1 is connected with the signal acquisition end of the main control unit;
the first end of the first driving resistor R1 is further connected with the first end of the second driving resistor R2, and the second end of the second driving resistor R2 is grounded;
the collector of the triode Q is connected with the anode of the diode D, and the cathode of the diode D is connected with a power supply VCC; the cathode and the anode of the diode D are also respectively connected with two ends of the coil;
and the collector of the triode Q and the cathode of the diode D are used as the voltage output end of the coil power supply circuit and the voltage input end.
In an exemplary embodiment of the present invention, the electromagnetic signal detection circuit may include: a coil current detection circuit and/or a hall sensing detection circuit.
In an exemplary embodiment of the present invention, the coil current detection circuit may include: a first sampling resistor R3 and a second sampling resistor R4;
a first end of the first sampling resistor R3 is used as a detection signal output end of the coil current detection circuit and is connected with a second signal acquisition end of the main control unit, and a second end of the first sampling resistor R3 is connected with an emitter of the triode Q; the first signal acquisition end of the main control unit comprises the second signal acquisition end;
a first end of the second sampling resistor R4 is a detection signal input end of the coil current detection circuit, and a detection signal input end of the coil current detection circuit is a detection signal input end of the electromagnetic signal detection circuit;
a first end of the second sampling resistor R4 is connected with a voltage input end of the coil through the triode Q;
the first end of the second sampling resistor R4 is connected to the emitter of the transistor Q, and the second end of the second sampling resistor R4 is grounded.
In an exemplary embodiment of the present invention, when the electromagnetic signal detection circuit is the hall sensing detection circuit, the emitter of the transistor Q is grounded.
In an exemplary embodiment of the present invention, the hall sensing detection circuit may include: a hall element and signal detection resistor R5;
a first power supply input end of the Hall element is connected with a power supply VCC, a second power supply input end of the Hall element is grounded, and a signal output end of the Hall element is connected with a second end of the signal detection resistor R5;
the first end of the signal detection resistor R5 is used as a detection signal output end of the Hall sensing detection circuit and is connected with the third signal acquisition end of the main control unit; the first signal acquisition end of the main control unit comprises the third signal acquisition end;
the Hall element is used as a detection signal input end of the Hall sensing detection circuit;
the detection signal input end of the Hall sensing detection circuit is used as the detection signal input end of the electromagnetic signal detection circuit; and the detection signal output end of the Hall sensing detection circuit is used as the detection signal output end of the electromagnetic signal detection circuit.
In an exemplary embodiment of the present invention, the core position detecting circuit may include: a position signal detection circuit;
a detection signal input end of the position signal detection circuit is arranged at an iron core extension end on the magnet body and is used for detecting a position signal of the iron core;
the detection signal output end of the position signal detection circuit is connected with the fourth signal acquisition end of the main control unit; the signal acquisition end of the main control unit comprises the fourth signal acquisition end;
the detection signal input end of the position signal detection circuit is used as the signal input end of the iron core position detection circuit; and the detection signal output end of the position signal detection circuit is used as the signal output end of the iron core position detection circuit.
In an exemplary embodiment of the present invention, the position signal detection circuit may include a grating assembly.
An embodiment of the present invention further provides a food processor, which may include: the cup comprises a cup body, a cup cover, a main control unit and any one of the above anti-uncovering circuits.
A food processor of an embodiment of the utility model may comprise: the food processor may comprise: the cup body, the cup cover and the main control unit; the open-prevention circuit includes: an iron core position detection circuit and an electromagnet for locking the cup body and the cup cover; the electromagnet comprises a magnet body, an iron core and a coil; the coil is wound on the magnet body, and the magnet body is arranged on the cup body; the iron core is arranged on the cup cover at a position corresponding to the magnet body; the signal acquisition end of the main control unit is connected with the signal output end of the iron core position detection circuit; the iron core position detection circuit is configured to detect a signal for judging the position of the iron core; the main control unit is arranged to receive the signal and judge the relative position of the iron core and the magnet body. Through the scheme of the embodiment, the cup cover and the cup body are locked in place, and the safety of the food processor is improved.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the example serve to explain the principles of the utility model and not to limit the utility model.
FIG. 1 is a schematic diagram of an anti-uncovering circuit according to an embodiment of the present invention;
fig. 2 is a block diagram of a core position detection circuit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a position signal detection circuit according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a first embodiment of a current signal detection circuit according to the present invention;
FIG. 5 is a diagram illustrating a second embodiment of a current signal detection circuit according to the present invention;
FIG. 6 is a schematic current diagram of a PWM control scheme according to an embodiment of the present invention;
fig. 7 is a block diagram of the components of a food processor according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The embodiment of the utility model also provides an anti-uncovering circuit A of a food processor, and the food processor B can comprise: the cup comprises a cup body 1, a cup cover 2 and a main control unit 4; as shown in fig. 1, the uncovering prevention circuit a may include: an iron core position detection circuit 5 and an electromagnet 3 for locking the cup body 1 and the cup cover 2; the electromagnet 3 comprises a magnet body 31, an iron core 32 and a coil 33; the coil 33 is wound on the magnet body 31, and the magnet body 31 is arranged on the cup body 1; the iron core 32 is arranged on the cup cover 2 at a position corresponding to the magnet body 31;
the signal acquisition end of the main control unit 4 is connected with the signal output end of the iron core position detection circuit 5;
the iron core position detection circuit 5 is configured to detect a signal for determining the position of the iron core; the signal may include: a position signal of the iron core 32 and/or a magnetic field signal of the electromagnet 3;
the main control unit 4 is configured to receive the signal and determine the relative position between the iron core 32 and the magnet body 31.
In an exemplary embodiment of the present invention, the main control unit 4 may determine the relative position between the iron core 32 and the magnet body 31, for example, whether the iron core 32 is moved in place, according to the detected position signal of the iron core 32 and/or the detected magnetic field signal of the electromagnet 3, and determine whether the cup cover is covered according to the determination result.
In the exemplary embodiment of the utility model, the cup cover is locked by the electromagnet, whether the iron core (or the ejector rod) of the electromagnet is really in place or not is detected by the cover opening prevention circuit, if the iron core (or the ejector rod) is not in place, the machine alarms, the machine stops working, and the safe use of the machine is ensured.
In the electromagnet 3, in an exemplary embodiment of the present invention, the iron core input end of the magnet body 31 may be provided with a spring 34 to buffer the iron core 32 by the spring 34.
In the exemplary embodiment of the present invention, in order to realize the detection of the relative position of iron core 32 and magnet body 31, two schemes may be used, one being to directly detect the relative position of iron core 32 and magnet body 31; the other is to detect the electromagnetic signal of the electromagnet 3, the electromagnetic signal may include the magnitude of the current in the coil and/or, since the magnitude of the induced current in the coil directly affects the relative position between the iron core 32 and the magnet body 31, and the relative position between the iron core 32 and the magnet body 31 may affect the magnetic field generated around the electromagnet, the relative position between the iron core 32 and the magnet body 31 may be determined by detecting the electromagnetic signal of the electromagnet. Two schemes will be described separately below:
scheme I,
In an exemplary embodiment of the present invention, as shown in fig. 2, the core position detection circuit 5 may include: a position signal detection circuit 51;
a detection signal input end of the position signal detection circuit 51 is arranged at an extending end of the iron core 32 on the magnet body 31 and is used for detecting a position signal of the iron core 32;
the detection signal output end of the position signal detection circuit 51 is connected with the fourth signal acquisition end of the main control unit 4; the signal acquisition end of the main control unit 4 comprises the fourth signal acquisition end;
a detection signal input end of the position signal detection circuit 51 is used as a signal input end of the iron core position detection circuit 5; a detection signal output terminal of the position signal detection circuit 51 serves as a signal output terminal of the core position detection circuit 5.
In an exemplary embodiment of the present invention, the position signal detection circuit 51 may include a grating component 511.
In an exemplary embodiment of the present invention, as shown in fig. 3, the change in the position of the core may be detected by a grating.
Scheme II,
In an exemplary embodiment of the present invention, as shown in fig. 2, the core position detecting circuit may include: a coil power supply circuit 52 and an electromagnetic signal detection circuit 53 connected to each other;
the signal output end of the main control unit 4 is connected with the control signal input end of the coil power supply circuit 52, and the voltage output end of the coil power supply circuit 52 is connected with two ends of the coil 33;
a detection signal output end of the electromagnetic signal detection circuit 53 serves as a signal output end of the iron core position detection circuit 5 and is connected with a first signal acquisition end of the main control unit 4; the signal acquisition end of the main control unit 4 comprises the first signal acquisition end;
a detection signal input end of the electromagnetic signal detection circuit 53 serves as a signal input end of the iron core position detection circuit 5, is connected with a voltage input end of the coil 33, and is configured to detect a current signal of the coil 33; or, the magnetic sensor is arranged at the magnet body 31 and configured to detect a magnetic field signal of the electromagnet 3.
In an exemplary embodiment of the present invention, as shown in fig. 4 and 5, the coil power supply circuit may include: the driving circuit comprises a triode Q, a first driving resistor R1, a second driving resistor R2 and a diode D;
the base electrode of the triode Q is connected with the first end of the first driving resistor R1;
the second end of the first driving resistor R1 is connected with the signal acquisition end of the main control unit 4;
the first end of the first driving resistor R1 is further connected with the first end of the second driving resistor R2, and the second end of the second driving resistor R2 is grounded;
the collector of the triode Q is connected with the anode of the diode D, and the cathode of the diode D is connected with a power supply VCC; the cathode and the anode of the diode D are also respectively connected with two ends of the coil;
the collector of the transistor Q and the cathode of the diode D serve as the voltage output terminal of the coil power supply circuit 52 and the voltage input terminal.
In an exemplary embodiment of the present invention, the electromagnetic signal detection circuit 53 may include: a coil current detection circuit and/or a hall sensing detection circuit.
In an exemplary embodiment of the present invention, the electromagnetic signal detection circuit 53 may be implemented in two ways: one mode can directly judge the current on the coil through the partial pressure acquired in the coil electrifying process; alternatively, the change in the magnetic field around the electromagnet 3 can be detected by a hall element provided in the magnetic field region at the magnet body 31. The two modes are described in detail below.
In a first way,
In an exemplary embodiment of the present invention, as shown in fig. 4, the coil current detection circuit may include: a first sampling resistor R3 and a second sampling resistor R4;
a first end of the first sampling resistor R3 is used as a detection signal output end of the coil current detection circuit and is connected with the second signal acquisition end of the main control 4, and a second end of the first sampling resistor R3 is connected with an emitter of the triode Q; the first signal acquisition end of the main control unit 4 comprises the second signal acquisition end;
a first end of the second sampling resistor R4 is a detection signal input end of the coil current detection circuit, and a detection signal input end of the coil current detection circuit is a detection signal input end of the electromagnetic signal detection circuit;
a first end of the second sampling resistor R4 is connected with a voltage input end of the coil through the triode Q;
the first end of the second sampling resistor R4 is connected to the emitter of the transistor Q, and the second end of the second sampling resistor R4 is grounded.
In an exemplary embodiment of the present invention, after the machine is closed and started, the P1.0I/O (input/output) port of the main control unit 1 (i.e. the signal output terminal of the main control unit 4) can output a high level, Q is turned on, the power supply voltage VCC is completely applied to the electromagnet, and the magnetic force of the electromagnet is completely output, because a large magnetic force is required during the attraction, the attraction of the iron core is ensured to be in place.
In an exemplary embodiment of the present invention, after the magnetic force of the electromagnet is completely output, the main control unit 4 may always control the electromagnet to be energized at a set high level in an initial stage of the output level of the port P1.0, and after the port P1.0 outputs the high level for a certain period of time, the port P1.0 may be controlled by PWM (pulse width modulation).
In an exemplary embodiment of the present invention, a current waveform is detected using PWM driving, and the smaller the inductance, the larger the ripple, and the larger the inductance, the smaller the ripple current for the same driving frequency. Whether the iron core is attracted in place can be judged according to the magnitude of the current ripple.
In the exemplary embodiment of the present invention, when the PWM control mode is adopted, the current on the second sampling resistor R4 is as shown in fig. 6, and if the iron core 32 is not in place or the iron core is missed, the inductance of the electromagnet 3 is small, and the peak current is large. The current waveform is as the waveform of the solid line a in fig. 6, the current reaches the maximum value Im1 at the moment of PWM turn-off, if the iron core is attracted in place at this time, the inductance of the electromagnet 3 is large at this time, and the peak current is small. The current waveform is as shown by the dashed line b in fig. 6, and at the moment the PWM is turned off, the current reaches a maximum value Im 2.
In an exemplary embodiment of the present invention, the port P1.1 (the signal acquisition end of the main control unit 1) is an analog-to-digital (AD) conversion port, a voltage signal of the second sampling resistor R4 can be acquired at a moment before the PWM is turned off, when the current signal is greater than or equal to the Im2 value, it can be considered that the iron core of the electromagnet is not attracted in place, the main control unit 4 can issue an alarm, and the machine stops working. On the contrary, when the current signal is smaller than the value of Im2, the iron core of the electromagnet can be considered to be attracted in place, and the machine works normally.
The second way,
In an exemplary embodiment of the present invention, as shown in fig. 5, when the electromagnetic signal detecting circuit 53 is the hall sensing circuit, the emitter of the transistor Q is grounded.
In an exemplary embodiment of the present invention, as shown in fig. 5, the hall sensing circuit may include: a hall element H and a signal detection resistor R5;
a first power supply input end of the Hall element H is connected with a power supply VCC, a second power supply input end of the Hall element H is grounded, and a signal output end of the Hall element H is connected with a second end of the signal detection resistor R5;
the first end of the signal detection resistor R5 is used as a detection signal output end of the hall sensing detection circuit and is connected with the third signal acquisition end of the main control unit 4; the first signal acquisition end of the main control unit 4 comprises the third signal acquisition end;
the Hall element H is used as a detection signal input end of the Hall sensing detection circuit;
the detection signal input end of the hall sensing detection circuit is used as the detection signal input end of the electromagnetic signal detection circuit 53; the detection signal output end of the hall sensing detection circuit is used as the detection signal output end of the electromagnetic signal detection circuit 53.
In the exemplary embodiment of the present invention, the iron core 32 is not attracted in place, or the iron core is neglected to be installed, the electromagnet 3 is energized and then the magnetic circuit has an air gap, the magnetic force at the root of the iron core 32 is weak, and the hall element H cannot sense the magnetic force. If the iron core 32 is attracted in place and the magnetic circuit has no air gap, the root of the iron core 32 has larger magnetic force, the Hall element H can sense the magnetic force, and the port P1.1 of the main control unit 4 receives a Hall triggering signal.
In an exemplary embodiment of the utility model, at least the following advantages are included:
1. when the machine works, the cup cover is locked and cannot be unscrewed; the food can not be opened, the cover can be opened only after the food in the crushing cup stops rotating, and the food can not be sprayed out;
2. the electromagnet can judge whether the position of the iron core is in place after being attracted, and the machine alarms if the position of the iron core is not in place, and stops working; the use safety of the machine is ensured;
3. after the attraction, PWM control is adopted, so that the heating value of the electromagnet is reduced, and the reliability is improved;
4. the cup cover part has no circuit, electric devices and the like, can be disassembled for cleaning, and is not easy to damage a machine;
5. compared with the original structure, the operation convenience is not influenced.
An embodiment of the present invention provides a food processor B, as shown in fig. 7, which may include: the cup comprises a cup body 1, a cup cover 2, a main control unit 4 and any one of the opening-preventing circuits A.
In the description of the present invention, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", "mouth" structure ", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the structures referred to have specific orientations, are configured and operated in specific orientations, and thus, are not to be construed as limiting the present invention.
In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "connected," "directly connected," "indirectly connected," "fixedly connected," "mounted," and "assembled" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; the terms "mounted," "connected," and "fixedly connected" may be directly connected or indirectly connected through intervening media, or may be connected through two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (10)
1. An anti-uncapping circuit for a food processor, the food processor comprising: the cup body, the cup cover and the main control unit; the open-prevention circuit includes: an iron core position detection circuit and an electromagnet for locking the cup body and the cup cover; the electromagnet comprises a magnet body, an iron core and a coil; the coil is wound on the magnet body, and the magnet body is arranged on the cup body; the iron core is arranged on the cup cover at a position corresponding to the magnet body;
the signal acquisition end of the main control unit is connected with the signal output end of the iron core position detection circuit;
the iron core position detection circuit is configured to detect a signal for judging the position of the iron core;
the main control unit is arranged to receive the signal and judge the relative position of the iron core and the magnet body.
2. The food processor cover-opening prevention circuit according to claim 1, wherein the core position detection circuit comprises: a coil power supply circuit and an electromagnetic signal detection circuit;
the signal output end of the main control unit is connected with the control signal input end of the coil power supply circuit, and the voltage output end of the coil power supply circuit is connected with the two ends of the coil;
a detection signal output end of the electromagnetic signal detection circuit is used as a signal output end of the iron core position detection circuit and is connected with a first signal acquisition end of the main control unit; the signal acquisition end of the main control unit comprises the first signal acquisition end;
a detection signal input end of the electromagnetic signal detection circuit is used as a signal input end of the iron core position detection circuit, is connected with a voltage input end of the coil and is set to detect a current signal of the coil; or the magnetic field signal is arranged at the magnet body and is used for detecting the magnetic field signal of the electromagnet.
3. The food processor lid open prevention circuit of claim 2, wherein the coil power supply circuit comprises: the driving circuit comprises a triode Q, a first driving resistor R1, a second driving resistor R2 and a diode D;
the base electrode of the triode Q is connected with the first end of the first driving resistor R1;
the second end of the first driving resistor R1 is connected with the signal acquisition end of the main control unit;
the first end of the first driving resistor R1 is further connected with the first end of the second driving resistor R2, and the second end of the second driving resistor R2 is grounded;
the collector of the triode Q is connected with the anode of the diode D, and the cathode of the diode D is connected with a power supply VCC; the cathode and the anode of the diode D are also respectively connected with two ends of the coil;
and the collector of the triode Q and the cathode of the diode D are used as the voltage output end of the coil power supply circuit and the voltage input end.
4. The food processor lid open prevention circuit of claim 3, wherein the electromagnetic signal detection circuit comprises: a coil current detection circuit and/or a hall sensing detection circuit.
5. The food processor lid open prevention circuit according to claim 4, wherein the coil current detection circuit comprises: a first sampling resistor R3 and a second sampling resistor R4;
a first end of the first sampling resistor R3 is used as a detection signal output end of the coil current detection circuit and is connected with a second signal acquisition end of the main control unit, and a second end of the first sampling resistor R3 is connected with an emitter of the triode Q; the first signal acquisition end of the main control unit comprises the second signal acquisition end;
a first end of the second sampling resistor R4 is used as a detection signal input end of the coil current detection circuit, and a detection signal input end of the coil current detection circuit is used as a detection signal input end of the electromagnetic signal detection circuit;
a first end of the second sampling resistor R4 is connected with a voltage input end of the coil through the triode Q;
the first end of the second sampling resistor R4 is connected to the emitter of the transistor Q, and the second end of the second sampling resistor R4 is grounded.
6. The lid open prevention circuit of a food processor as defined in claim 4, wherein the emitter of the transistor Q is grounded when the electromagnetic signal detection circuit is the Hall sensing detection circuit.
7. The food processor cover opening prevention circuit according to claim 6, wherein the Hall sensing detection circuit comprises: a hall element and signal detection resistor R5;
a first power supply input end of the Hall element is connected with a power supply VCC, a second power supply input end of the Hall element is grounded, and a signal output end of the Hall element is connected with a second end of the signal detection resistor R5;
the first end of the signal detection resistor R5 is used as a detection signal output end of the Hall sensing detection circuit and is connected with the third signal acquisition end of the main control unit; the first signal acquisition end of the main control unit comprises the third signal acquisition end;
the Hall element is used as a detection signal input end of the Hall sensing detection circuit;
the detection signal input end of the Hall sensing detection circuit is used as the detection signal input end of the electromagnetic signal detection circuit; and the detection signal output end of the Hall sensing detection circuit is used as the detection signal output end of the electromagnetic signal detection circuit.
8. The cover opening prevention circuit of a food processor as claimed in any one of claims 1 to 7, wherein the core position detection circuit comprises: a position signal detection circuit;
a detection signal input end of the position signal detection circuit is arranged at an iron core extension end on the magnet body and is used for detecting a position signal of the iron core;
the detection signal output end of the position signal detection circuit is connected with the fourth signal acquisition end of the main control unit; the signal acquisition end of the main control unit comprises the fourth signal acquisition end;
the detection signal input end of the position signal detection circuit is used as the signal input end of the iron core position detection circuit; and the detection signal output end of the position signal detection circuit is used as the signal output end of the iron core position detection circuit.
9. The food processor cover opening prevention circuit of claim 8, wherein the position signal detection circuit comprises a grating assembly.
10. A food processor, comprising: cup, bowl cover, main control unit and claim 1-9 arbitrary one prevent uncapping circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120326590.2U CN215383414U (en) | 2021-02-05 | 2021-02-05 | Food preparation machine and prevent uncapping circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120326590.2U CN215383414U (en) | 2021-02-05 | 2021-02-05 | Food preparation machine and prevent uncapping circuit thereof |
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| Publication Number | Publication Date |
|---|---|
| CN215383414U true CN215383414U (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120326590.2U Active CN215383414U (en) | 2021-02-05 | 2021-02-05 | Food preparation machine and prevent uncapping circuit thereof |
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| Country | Link |
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| CN (1) | CN215383414U (en) |
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2021
- 2021-02-05 CN CN202120326590.2U patent/CN215383414U/en active Active
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