CN217135493U - Data transmission device and cooking equipment - Google Patents
Data transmission device and cooking equipment Download PDFInfo
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- CN217135493U CN217135493U CN202123024233.XU CN202123024233U CN217135493U CN 217135493 U CN217135493 U CN 217135493U CN 202123024233 U CN202123024233 U CN 202123024233U CN 217135493 U CN217135493 U CN 217135493U
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Abstract
The embodiment of the utility model discloses data transmission device and cooking equipment, this data transmission device includes: an NFC signal transmission unit and a control unit; the NFC signal transmission unit is electrically connected with the control unit through a single wire; the NFC signal transmission unit is used for receiving a data signal sent by an external NFC coil included in the terminal, transmitting the data signal to the control unit through a single wire, and coupling the data signal with the external NFC coil to generate induction voltage so as to supply power to the NFC signal transmission unit; the control unit is used for receiving a data signal through a single wire. The data transmission device is electrically connected between the NFC signal transmission unit and the control unit through a single wire, power supply of the NFC signal transmission unit is achieved through induction voltage obtained through coil coupling, an external power line is not needed, wiring is simple, cost is saved, and the problems that cost is high due to the fact that connecting wires are multiple and reliability of the device is insufficient due to the fact that the connecting wires are connected complicatedly are effectively reduced.
Description
Technical Field
The utility model relates to an intelligence household electrical appliances technical field especially relates to a data transmission device and cooking equipment.
Background
The wiring of the internal control circuit of the existing cooking equipment is complex, and the connecting wires are more, so that the cost is high, the circuit production is complex, and the reliability is poor. Therefore, it is desirable to provide a simple connection.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide a data transmission device and cooking apparatus, which can solve the problems of complicated wiring, high cost and poor reliability of the internal control circuit of the cooking apparatus in the prior art.
In order to achieve the above object, the first aspect of the present invention provides a data transmission device, which includes: an NFC signal transmission unit and a control unit;
the NFC signal transmission unit is electrically connected with the control unit through a single wire;
the NFC signal transmission unit is used for receiving a data signal sent by an external NFC coil included in the terminal, transmitting the data signal to the control unit through the single wire, and coupling the data signal with the external NFC coil to generate induction voltage so as to supply power to the NFC signal transmission unit;
the control unit is used for receiving the data signal through the single wire.
In one possible implementation, the NFC signal transmission unit includes an internal NFC coil, a first capacitor, and an NFC chip;
the first I/O port of the NFC chip is electrically connected with the input end of the control unit through a single wire; a first power supply port of the NFC chip is electrically connected with a second power supply port of the NFC chip through the first capacitor; one end of the internal NFC coil is electrically connected with a second I/O port of the NFC chip; the other end of the internal NFC coil is electrically connected with a third I/O port of the NFC chip.
In one possible implementation, the control unit includes: the device comprises a main control module, a detection module and a driving module; the main control module is respectively electrically connected with the detection module and the driving module; the master control module is also electrically connected with the NFC signal transmission unit through a single wire;
the main control module is used for receiving the data signal based on the single wire and outputting the data signal to the driving module;
the detection module is used for detecting the environmental parameters of the driving module and outputting detection signals corresponding to the environmental parameters to the main control module;
the driving module is used for receiving the data signal.
In one possible implementation, the master control module includes: the power supply comprises a main control chip, a first polarity capacitor, a second capacitor and a third capacitor, wherein a first power supply port of the main control chip is electrically connected with a power supply voltage end, one end of the first polarity capacitor and one end of the second capacitor are both electrically connected with the power supply voltage end, and the other end of the first polarity capacitor and the other end of the second capacitor are both electrically connected with a public ground; the first I/O port of the main control chip is electrically connected with the detection module; the second I/O port of the main control chip is electrically connected with the driving module; the second power supply port of the main control chip is electrically connected with the public ground; a third I/O port of the main control chip is electrically connected with the public ground through the third capacitor; and the third I/O port of the main control chip is also electrically connected with the first I/O port of the NFC chip included by the NFC signal transmission unit.
In one possible implementation, the driving module includes: the second I/O port of the main control chip is electrically connected with the base electrode of the triode through the first resistor, the collector electrode of the triode is electrically connected with one end of the coil of the relay, and the emitter electrode of the triode is electrically connected with the public ground; the other end of the coil of the relay is electrically connected with the power supply voltage; one end of the normally open contact of the relay is electrically connected with one end of the heating element, and the other end of the normally open contact of the relay is electrically connected with the live wire.
In one possible implementation, the detection module includes: the first I/O port of the main control chip is electrically connected with one end of the NTC sensor through the third resistor, one end of the fourth capacitor is electrically connected between the first I/O port of the main control chip and the third resistor, and the other end of the fourth capacitor is electrically connected with the common ground end; one end of the NTC sensor is electrically connected with one end of the fourth resistor, the other end of the fourth resistor is electrically connected with the common ground end, and the other end of the NTC sensor is electrically connected with the power supply voltage end.
In one possible implementation, the data transmission apparatus further includes: a filtering unit and a switching power supply unit; the switching power supply unit is electrically connected with the filtering unit and the control unit respectively;
the filtering unit is used for filtering electromagnetic interference of an external power supply;
the switching power supply unit is used for converting high-voltage alternating current of the external power supply into low-voltage direct current to supply power to the control unit.
In one possible implementation, the filtering unit includes: the safety protection circuit comprises a first connecting terminal, a second connecting terminal, a fuse, a piezoresistor, a safety capacitor, a fourth resistor, a fifth resistor, a sixth resistor and a first diode, wherein one end of the fuse is electrically connected with a live wire through the first connecting terminal, and the other end of the fuse is respectively electrically connected with one end of the piezoresistor, one end of the safety capacitor, one end of the fourth resistor and the anode of the first diode; the other end of the fourth resistor is electrically connected with one end of the sixth resistor through the fifth resistor, and the other end of the sixth resistor, the other end of the piezoresistor and the other end of the safety capacitor are electrically connected with a zero line through the second wiring terminal; a cathode of the first diode is electrically connected to an anode of a second diode included in the switching power supply unit.
In one possible implementation, the switching power supply unit includes: the power supply comprises a power supply management chip, a transformer, a second diode, a third diode, a fourth diode, a fifth diode, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, an inductor, a second polar capacitor, a third polar capacitor, a fourth polar capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor and an eighth capacitor; the anode of the second diode and the cathode of the first diode are also electrically connected with the power supply voltage end; the cathode of the second diode is electrically connected with one end of the seventh resistor, and the other end of the seventh resistor is electrically connected with one end of the inductor, one end of the eighth resistor and one end of the second polarity capacitor respectively; the other end of the inductor is electrically connected with the other end of the eighth resistor, one end of the ninth resistor, one end of the third polar capacitor, one end of the fifth capacitor, one end of the tenth resistor and one end of the high-voltage side of the transformer respectively; the other end of the second polar capacitor and the other end of the third polar capacitor are electrically connected with the second wiring terminal; the other end of the ninth resistor is electrically connected with one end of the fourth polarity capacitor through the eleventh resistor; the other end of the fifth capacitor is electrically connected with the cathode of the third diode through the twelfth resistor, and the other end of the tenth resistor is electrically connected with the cathode of the third diode; the anode of the third diode is electrically connected with the input port of the power management chip; the other end of the high-voltage side of the transformer is electrically connected with an output port of the power management chip; one end of the fourth polarity capacitor is electrically connected with a power port of the power management chip; a ground port of the power management chip is electrically connected to the other end of the fourth polarity capacitor, one end of the thirteenth resistor, one end of the sixth capacitor, a cathode of the fourth diode, one end of the seventh capacitor, and one end of the low-voltage side of the transformer, respectively; the reverse-phase input port of the power management chip is electrically connected with the other end of the sixth capacitor and the cathode of the fifth diode respectively; a chip selection port of the power management chip is electrically connected with the other end of the thirteenth resistor; the anode of the fourth diode is electrically connected with the other end of the seventh capacitor; the anode of the fourth diode is electrically connected with one end of the fifth-polarity capacitor, one end of the fourteenth resistor and one end of the eighth capacitor respectively; the other end of the fifth polarity capacitor, the other end of the fourteenth resistor and the other end of the eighth capacitor are electrically connected with the second wiring terminal, and the second wiring terminal is electrically connected with the power supply voltage terminal; the other end of the low-voltage side of the transformer and the anode of the fifth diode are electrically connected with the power supply voltage end respectively.
To achieve the above object, a second aspect of the present invention provides a cooking apparatus including the data transmission device according to the first aspect or any one of the optional implementations.
Adopt the embodiment of the utility model provides a, following beneficial effect has:
the embodiment of the utility model discloses data transmission device, this data transmission device includes: an NFC signal transmission unit and a control unit; the NFC signal transmission unit is electrically connected with the control unit through a single wire; the NFC signal transmission unit is used for receiving a data signal sent by an external NFC coil included in the terminal, transmitting the data signal to the control unit through a single wire, and coupling the data signal with the external NFC coil to generate induction voltage so as to supply power to the NFC signal transmission unit; the control unit is used for receiving a data signal through a single wire. The data transmission device is electrically connected between the NFC signal transmission unit and the control unit through a single wire, power supply of the NFC signal transmission unit is achieved through induction voltage obtained through coil coupling, an external power line is not needed, wiring is simple, cost is saved, and the problems that cost is high due to the fact that connecting wires are multiple and reliability of the device is insufficient due to the fact that the connecting wires are connected complicatedly are effectively reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Wherein:
fig. 1 is a block diagram of a data transmission device according to an embodiment of the present invention;
fig. 2 is another block diagram of a data transmission device according to an embodiment of the present invention;
fig. 3-4 are schematic circuit connection diagrams of a data transmission device according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a data signal according to an embodiment of the present invention
Fig. 6 is a schematic structural diagram of a cooking apparatus according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a block diagram of a data transmission device according to an embodiment of the present invention; fig. 1 shows a data transmission device 10 comprising: an NFC signal transmission unit 11 and a control unit 12;
the NFC signal transmission unit 11 is electrically connected with the control unit 12 through a single wire; the NFC signal transmission unit 11 is used for receiving data signals sent by an external NFC coil included in the terminal 00 and transmitting the data signals to the control unit 12 through a single wire, and the NFC signal transmission unit 11 is coupled with the external NFC coil to generate induction voltage so as to supply power to the NFC signal transmission unit 11; further, the control unit 12 is configured to receive the data signal transmitted by the NFC signal transmission unit 11 through the single wire.
It should be noted that terminal 00 is any terminal with an NFC module, including but not limited to an electronic device such as a mobile phone, a tablet, or a computer, and stores control data or information to be transmitted on the NFC module of the terminal by operating on the electronic device, and converts the information into a data signal through the NFC module to transmit to NFC signal transmission unit 11, and when transmitting, an induced voltage is obtained through coupling between two coils of the NFC module and the NFC signal transmission unit 11, and the obtained induced voltage can be used for supplying power to the NFC signal transmission unit 11, so that an external power supply is not needed to supply power to the NFC signal transmission unit 11, and power lines connecting the NFC signal transmission unit 11 and the external power supply are reduced. Furthermore, the NFC signal transmission unit 11 needs to forward the data signal to the main control module, so that data can be sent by a single line connected between the two, thereby reducing the number of traditional 4 communication lines, further simplifying the number of connection lines, and reducing the complexity of connection lines of the control circuit.
The embodiment of the utility model discloses data transmission device, this data transmission device includes: an NFC signal transmission unit and a control unit; the NFC signal transmission unit is electrically connected with the control unit through a single wire; the NFC signal transmission unit is used for receiving a data signal sent by an external NFC coil included in the terminal, transmitting the data signal to the control unit through a single wire, and coupling the data signal with the external NFC coil to generate induction voltage so as to supply power to the NFC signal transmission unit; the control unit is used for receiving a data signal through a single wire. The data transmission device is electrically connected between the NFC signal transmission unit and the control unit through a single wire, power supply of the NFC signal transmission unit is achieved through induction voltage obtained through coil coupling, an external power line is not needed, wiring is simple, cost is saved, and the problems that cost is high due to the fact that connecting wires are multiple and reliability of the device is insufficient due to the fact that the connecting wires are connected complicatedly are effectively reduced.
Referring to fig. 2, fig. 2 is another structural block diagram of a data transmission device according to an embodiment of the present invention, and fig. 2 shows the data transmission device 10 including: an NFC signal transmission unit 11, a control unit 12, a filtering unit 14, and a switching power supply unit 13;
the NFC signal transmission unit 11 is electrically connected with the control unit 12 through a single wire; the switching power supply unit 13 is respectively electrically connected with the filtering unit 14 and the control unit 12; the NFC signal transmission unit 11 is configured to receive a data signal sent by an external NFC coil included in the terminal 00 and transmit the data signal to the control unit 12 through a single wire, and the NFC signal transmission unit 11 is coupled with the external NFC coil to generate an induced voltage to supply power to the NFC signal transmission unit 11; the control unit 12 is configured to receive the data signal transmitted by the NFC signal transmission unit 11 through a single wire; a filtering unit 14 for filtering electromagnetic interference of an external power supply; the switching power supply unit 13 is configured to convert a high-voltage ac power of an external power supply into a low-voltage dc power to supply power to the control unit 12.
Further, the control unit 12 includes: a main control module 120, a detection module 121 and a driving module 122; the main control module 120 is electrically connected to the detection module 121 and the driving module 122 respectively; the main control module 120 is electrically connected with the NFC signal transmission unit 11 through a single wire; the main control module 120 is configured to receive the data signal transmitted by the NFC signal transmission unit 11 through a single wire, and output the data signal to the driving module 122; the detection module 121 is configured to detect an environmental parameter of the driving module 122, and output a detection signal corresponding to the environmental parameter to the main control module 120; the driving module 122 is used for receiving data signals.
In one possible implementation, the detection module 121 may be an NTC detection for detecting the temperature of the cooked food; or a pressure detector for detecting the pressure of the cooked food, etc., which is not limited herein; the driving module 122 may be a relay control module, and is configured to control the actions of turning off and closing the relay to drive the heating plate, that is, cooking food; the master control module is controlled by the MCU and is used for controlling the opening and closing of the relay, carrying out NTC detection and receiving data sent by the NFC circuit; the NFC signal transmission unit 11 is an NFC circuit, and is configured to receive and store a program sent from the program carrier, and send the program to the MCU chip, where the program is sent in the form of a data signal.
In a possible implementation manner, fig. 3 to 4 are schematic circuit connection diagrams of a data transmission device according to an embodiment of the present invention; the data transmission device obtained by the connection structure of fig. 3-4 can perform data transmission by single-wire connection under the condition of reducing communication lines and power lines, thereby reducing the manufacturing difficulty and improving the line reliability, wherein the circuit connection schematic diagram in fig. 3-4 is specifically as follows:
in one possible implementation manner, referring to fig. 3, the NFC signal transmission unit 11 includes an internal NFC COIL, a first capacitor C2, and an NFC chip U2; further, the circuit connection form of the NFC signal transmission unit 11 is: the first I/O port Pb of the NFC chip U2 is electrically connected to the input terminal of the control unit 12 through a single wire; the first power supply port Vdd of the NFC chip U2 and the second power supply port Vss of the NFC chip U2 are electrically connected through a first capacitor C2; one end of the internal NFC COIL is electrically connected to the second I/O port Pc of the NFC chip U2; the other end of the internal NFC COIL is electrically connected to the third I/O port Pd of the NFC chip U2.
The main control module 120 includes: the main control chip U1, a first polarity capacitor EC1, a second capacitor C1 and a third capacitor C3; further, the circuit connection form of the main control module 120 is: a first power supply port Vdd of the main control chip is electrically connected with a power supply voltage end VCC, one ends of the first polarity capacitor and the second capacitor C1 are electrically connected with the power supply voltage end, and the other ends of the first polarity capacitor and the second capacitor are electrically connected with a public ground; the first I/O port P01 of the main control chip is electrically connected to the detection module 121; the second I/O port P03 of the main control chip is electrically connected to the driving module 122; the second power supply port VSS of the main control chip is electrically connected with the public ground; the third I/O port P06 of the main control chip is electrically connected to the common ground through a third capacitor C3; the third I/O port P06 of the master chip is also electrically connected to the first power port VddPb of the NFC chip U2 included in the NFC signal transmission unit 11.
The driving module 122 includes: the device comprises a first resistor R1, a triode Q1, a relay K1 and a heating element; further, the circuit connection form of the driving module 122 is: the second I/O port P03 of the main control chip is electrically connected with the base electrode of the triode Q1 through a first resistor R1, the collector electrode of the triode Q1 is electrically connected with one end of the coil of the relay, and the emitter electrode of the triode is electrically connected with the public ground; the other end of the coil of the relay is electrically connected with a power supply voltage; one end of the normally open contact of the relay is electrically connected with one end of the heating element (heating plate), and the other end of the normally open contact of the relay is electrically connected with the live wire ACL.
The detection module 121 includes: the NTC sensor, a fourth capacitor C4, a third resistor R4 and a fourth resistor R3; further, the circuit connection form of the detection module 121 is: the first I/O port P01 of the main control chip is electrically connected with one end of the NTC sensor through a third resistor R4, one end of a fourth capacitor C4 is electrically connected between the first I/O port of the main control chip and the third resistor, and the other end of the fourth capacitor is electrically connected with a common ground end; one end of the NTC sensor is also electrically connected with one end of a fourth resistor R3, the other end of the fourth resistor is electrically connected with a common ground terminal, and the other end of the NTC sensor is electrically connected with a power supply voltage terminal.
With continued reference to fig. 4, the filtering unit 14 includes: the circuit comprises a first connecting terminal ACL, a second connecting terminal ACN, a FUSE FUSE1, a piezoresistor ZNR1, an safety capacitor CX1, a fourth resistor, a fifth resistor, a sixth resistor and a first diode; further, the circuit connection form of the filtering unit 14 is: one end of the fuse is electrically connected with a live wire through a first wiring terminal ACL, and the other end of the fuse is electrically connected with one end of the voltage dependent resistor, one end of the safety capacitor, one end of the fourth resistor R14 and the anode of the first diode D1 respectively; the other end of the fourth resistor is electrically connected with one end of a sixth resistor R40 through a fifth resistor R26, and the other end of the sixth resistor, the other end of the piezoresistor and the other end of the safety capacitor are electrically connected with a zero line through a second connecting terminal ACN; the cathode of the first diode is electrically connected to the anode of a second diode D2 included in the switching power supply circuit.
The switching power supply unit 13 includes: a power management chip U3, a transformer T1, a second diode D2, a third diode D4, a fourth diode D3, a fifth diode D5, a seventh resistor R2, an eighth resistor R27, a ninth resistor R7, a tenth resistor R34, an eleventh resistor R8, a twelfth resistor E29, a thirteenth resistor R6, a fourteenth resistor R5, an inductor L1, a second polar capacitor EC3, a third polar capacitor EC4, a fourth polar capacitor EC2, a fifth polar capacitor EC5, a fifth capacitor C1, a sixth capacitor C3, a seventh capacitor C15 and an eighth capacitor C9; further, the circuit connection form of the switching power supply unit 13 is: the anode of the second diode D2 and the cathode of the first diode are also electrically connected with a power supply voltage end; the cathode of the second diode is electrically connected with one end of a seventh resistor R2, and the other end of the seventh resistor is electrically connected with one end of an inductor L1, one end of an eighth resistor R27 and one end of a second polarity capacitor EC3 respectively; the other end of the inductor is electrically connected with the other end of the eighth resistor R27, one end of the ninth resistor R7, one end of the third polar capacitor EC4, one end of the fifth capacitor C1, one end of the tenth resistor R34 and one end 1 on the high-voltage side of the transformer T1 respectively; the other end of the second polar capacitor EC3 and the other end of the third polar capacitor EC4 are electrically connected with a second connection terminal ACN; the other end of the ninth resistor is electrically connected with one end of a fourth polarity capacitor EC2 through an eleventh resistor R8; the other end of the fifth capacitor C1 is electrically connected to the cathode of the third diode D4 through a twelfth resistor E29, and the other end of the tenth resistor is electrically connected to the cathode of the third diode; the anode of the third diode is electrically connected with the input port C of the power management chip; the other end 4 of the high-voltage side of the transformer is electrically connected with an output port C of the power management chip; one end of the fourth polarity capacitor is also electrically connected with a power supply port VDD of the power supply management chip; the ground port GND of the power management chip is electrically connected to the other end of the fourth polarity capacitor, one end of a thirteenth resistor R6, one end of a sixth capacitor C3, the cathode of a fourth diode D3, one end of a seventh capacitor C15, and one end 6 of the low-voltage side of the transformer T1; the inverting input port FB of the power management chip is respectively electrically connected with the other end of the sixth capacitor and the cathode of the fifth diode D5; the chip selection port CS of the power management chip is electrically connected with the other end of the thirteenth resistor; the anode of the fourth diode is electrically connected with the other end of the seventh capacitor; the anode of the fourth diode is electrically connected with one end of a fifth polarity capacitor EC5, one end of a fourteenth resistor R5 and one end of an eighth capacitor C9 respectively; the other end of the fifth polarity capacitor, the other end of the fourteenth resistor and the other end of the eighth capacitor are electrically connected with a second wiring terminal, and the second wiring terminal is electrically connected with a power supply voltage terminal VCC; the other end 8 of the low voltage side of the transformer and the anode of the fifth diode are electrically connected to the supply voltage terminal, respectively.
It should be noted that the data transmission device operates according to the following principle: in the state of no data transmission, the Pb pin of the NFC chip outputs a data signal of a continuous low level, when there is data to be transmitted, a rising edge is generated, a high level is simultaneously output and maintained for 1S, and then a falling edge is generated and a data signal of 1S is maintained for a low level, which may refer to the data signal of section a in fig. 5, where the data signal of section a marks the start bit of data transmission; further, the a-segment data signals are in the process of data transmission data information, at the moment, the data signals are changed into high and low levels to be alternated, and the maintaining time is shortened; finally, the c-segment data signal may mark the end of data transmission: at this time, the data signal changes to low level and maintains 1S, and then maintains the low level state after high level maintains 1S, thus proving that the data transmission is finished.
The embodiment of the utility model discloses data transmission device, data transmission device includes: the NFC signal transmission unit, the control unit, the filtering unit and the switching power supply unit; wherein, the control unit includes: the device comprises a main control module, a detection module and a driving module; the NFC signal transmission unit is electrically connected with the control unit through a single wire; the switching power supply unit is electrically connected with the filtering unit and the control unit respectively; the main control module is respectively and electrically connected with the detection module and the driving module; the main control module is also electrically connected with the NFC signal transmission unit through a single wire; the NFC signal transmission unit is used for receiving a data signal sent by an external NFC coil included in the terminal and transmitting the data signal to the control unit through a single wire, and the NFC signal transmission unit is coupled with the external NFC coil to generate induction voltage so as to supply power to the NFC signal transmission unit; the control unit is used for receiving the data signal transmitted by the NFC signal transmission unit through a single wire; the filtering unit is used for filtering the electromagnetic interference of an external power supply; the switching power supply unit is used for converting high-voltage alternating current of an external power supply into low-voltage direct current to supply power to the control unit. The main control module is used for receiving the data signals transmitted by the NFC signal transmission unit through a single wire and outputting the data signals to the driving module; the detection module is used for detecting the environmental parameters of the driving module and outputting detection signals corresponding to the environmental parameters to the main control module; the driving module is used for receiving data signals. The data transmission device is electrically connected between the NFC signal transmission unit and the control unit through a single wire, power supply of the NFC signal transmission unit is achieved through induction voltage obtained through coil coupling, an external power line is not needed, wiring is simple, cost is saved, and the problems that cost is high due to the fact that connecting wires are multiple and reliability of the device is insufficient due to the fact that the connecting wires are connected complicatedly are effectively reduced.
Fig. 6 is a schematic structural diagram of a cooking apparatus in an embodiment of the present invention, and as for the cooking apparatus in fig. 6, the cooking apparatus includes the data transmission device shown in fig. 1 or fig. 2, the beneficial effects of the cooking apparatus are not repeated, and reference can be made to the foregoing description. Cooking devices include, but are not limited to, electric cookers, induction cookers, electric ovens, electric pressure cookers, and like cooking appliances.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A data transmission apparatus, characterized in that the data transmission apparatus comprises: an NFC signal transmission unit and a control unit;
the NFC signal transmission unit is electrically connected with the control unit through a single wire;
the NFC signal transmission unit is used for receiving a data signal sent by an external NFC coil included in the terminal, transmitting the data signal to the control unit through the single wire, and coupling the data signal with the external NFC coil to generate induction voltage so as to supply power to the NFC signal transmission unit;
the control unit is used for receiving the data signal through the single wire.
2. The data transmission device according to claim 1, wherein the NFC signal transmission unit includes an internal NFC coil, a first capacitor, and an NFC chip;
the first I/O port of the NFC chip is electrically connected with the input end of the control unit through a single wire; a first power supply port of the NFC chip is electrically connected with a second power supply port of the NFC chip through the first capacitor; one end of the internal NFC coil is electrically connected with a second I/O port of the NFC chip; the other end of the internal NFC coil is electrically connected with a third I/O port of the NFC chip.
3. The data transmission apparatus according to claim 1, wherein the control unit includes: the device comprises a main control module, a detection module and a driving module; the main control module is electrically connected with the detection module and the driving module respectively; the master control module is also electrically connected with the NFC signal transmission unit through a single wire;
the main control module is used for receiving the data signal based on the single wire and outputting the data signal to the driving module;
the detection module is used for detecting the environmental parameters of the driving module and outputting detection signals corresponding to the environmental parameters to the main control module;
the driving module is used for receiving the data signal.
4. The data transmission apparatus according to claim 3, wherein the main control module comprises: the power supply comprises a main control chip, a first polarity capacitor, a second capacitor and a third capacitor, wherein a first power supply port of the main control chip is electrically connected with a power supply voltage end, one end of the first polarity capacitor and one end of the second capacitor are both electrically connected with the power supply voltage end, and the other end of the first polarity capacitor and the other end of the second capacitor are both electrically connected with a public ground; the first I/O port of the main control chip is electrically connected with the detection module; the second I/O port of the main control chip is electrically connected with the driving module; the second power supply port of the main control chip is electrically connected with the public ground; a third I/O port of the main control chip is electrically connected with the public ground through the third capacitor; and the third I/O port of the main control chip is also electrically connected with the first I/O port of the NFC chip included by the NFC signal transmission unit.
5. The data transmission apparatus according to claim 4, wherein the driving module comprises: the second I/O port of the main control chip is electrically connected with the base electrode of the triode through the first resistor, the collector electrode of the triode is electrically connected with one end of the coil of the relay, and the emitter electrode of the triode is electrically connected with the public ground; the other end of the coil of the relay is electrically connected with the power supply voltage; one end of the normally open contact of the relay is electrically connected with one end of the heating element, and the other end of the normally open contact of the relay is electrically connected with the live wire.
6. The data transmission apparatus according to claim 4, wherein the detection module comprises: the first I/O port of the main control chip is electrically connected with one end of the NTC sensor through the third resistor, one end of the fourth capacitor is electrically connected between the first I/O port of the main control chip and the third resistor, and the other end of the fourth capacitor is electrically connected with the common ground end; one end of the NTC sensor is electrically connected with one end of the fourth resistor, the other end of the fourth resistor is electrically connected with the common ground end, and the other end of the NTC sensor is electrically connected with the power supply voltage end.
7. The data transmission apparatus according to claim 6, wherein the data transmission apparatus further comprises: a filtering unit and a switching power supply unit; the switching power supply unit is electrically connected with the filtering unit and the control unit respectively;
the filtering unit is used for filtering electromagnetic interference of an external power supply;
the switching power supply unit is used for converting high-voltage alternating current of the external power supply into low-voltage direct current to supply power to the control unit.
8. The data transmission apparatus according to claim 7, wherein the filtering unit comprises: the safety protection circuit comprises a first connecting terminal, a second connecting terminal, a fuse, a piezoresistor, a safety capacitor, a fourth resistor, a fifth resistor, a sixth resistor and a first diode, wherein one end of the fuse is electrically connected with a live wire through the first connecting terminal, and the other end of the fuse is respectively electrically connected with one end of the piezoresistor, one end of the safety capacitor, one end of the fourth resistor and the anode of the first diode; the other end of the fourth resistor is electrically connected with one end of the sixth resistor through the fifth resistor, and the other end of the sixth resistor, the other end of the piezoresistor and the other end of the safety capacitor are electrically connected with a zero line through the second wiring terminal; the cathode of the first diode is electrically connected to the anode of a second diode included in the switching power supply circuit.
9. The data transmission device according to claim 8, wherein the switching power supply unit includes: the power supply comprises a power supply management chip, a transformer, a second diode, a third diode, a fourth diode, a fifth diode, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, an inductor, a second polar capacitor, a third polar capacitor, a fourth polar capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor and an eighth capacitor; the anode of the second diode and the cathode of the first diode are also electrically connected with the power supply voltage end; the cathode of the second diode is electrically connected with one end of the seventh resistor, and the other end of the seventh resistor is electrically connected with one end of the inductor, one end of the eighth resistor and one end of the second polarity capacitor respectively; the other end of the inductor is electrically connected with the other end of the eighth resistor, one end of the ninth resistor, one end of the third polar capacitor, one end of the fifth capacitor, one end of the tenth resistor and one end of the high-voltage side of the transformer respectively; the other end of the second polar capacitor and the other end of the third polar capacitor are electrically connected with the second wiring terminal; the other end of the ninth resistor is electrically connected with one end of the fourth polarity capacitor through the eleventh resistor; the other end of the fifth capacitor is electrically connected with the cathode of the third diode through the twelfth resistor, and the other end of the tenth resistor is electrically connected with the cathode of the third diode; the anode of the third diode is electrically connected with the input port of the power management chip; the other end of the high-voltage side of the transformer is electrically connected with an output port of the power management chip; one end of the fourth polarity capacitor is electrically connected with a power port of the power management chip; a ground port of the power management chip is electrically connected to the other end of the fourth polarity capacitor, one end of the thirteenth resistor, one end of the sixth capacitor, a cathode of the fourth diode, one end of the seventh capacitor, and one end of the low-voltage side of the transformer, respectively; the reverse-phase input port of the power management chip is electrically connected with the other end of the sixth capacitor and the cathode of the fifth diode respectively; a chip selection port of the power management chip is electrically connected with the other end of the thirteenth resistor; the anode of the fourth diode is electrically connected with the other end of the seventh capacitor; the anode of the fourth diode is electrically connected with one end of the fifth-polarity capacitor, one end of the fourteenth resistor and one end of the eighth capacitor respectively; the other end of the fifth polarity capacitor, the other end of the fourteenth resistor and the other end of the eighth capacitor are electrically connected with the second wiring terminal, and the second wiring terminal is electrically connected with the power supply voltage terminal; the other end of the low-voltage side of the transformer and the anode of the fifth diode are electrically connected with the power supply voltage end respectively.
10. Cooking device, characterized in that it comprises a data transmission device according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123024233.XU CN217135493U (en) | 2021-12-02 | 2021-12-02 | Data transmission device and cooking equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123024233.XU CN217135493U (en) | 2021-12-02 | 2021-12-02 | Data transmission device and cooking equipment |
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| Publication Number | Publication Date |
|---|---|
| CN217135493U true CN217135493U (en) | 2022-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123024233.XU Active CN217135493U (en) | 2021-12-02 | 2021-12-02 | Data transmission device and cooking equipment |
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| Country | Link |
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| CN (1) | CN217135493U (en) |
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- 2021-12-02 CN CN202123024233.XU patent/CN217135493U/en active Active
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