CN216083722U - Hardware circuit and wire controller - Google Patents
Hardware circuit and wire controller Download PDFInfo
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- CN216083722U CN216083722U CN202122550080.6U CN202122550080U CN216083722U CN 216083722 U CN216083722 U CN 216083722U CN 202122550080 U CN202122550080 U CN 202122550080U CN 216083722 U CN216083722 U CN 216083722U
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Abstract
The utility model discloses a hardware circuit, comprising: an NFC chip comprising a Vout port and a Vin port; the Vout port is an output port of the radio frequency field energy of the NFC chip, and the Vin port is an input port of a power supply; an antenna unit electrically connected to the NFC chip; a first semiconductor device located between the power supply and the Vin port; a second semiconductor device located between the Vout port and the first semiconductor device; the first semiconductor device and the second semiconductor device are both diodes; the anode of the first semiconductor device is connected with the power supply, and the cathode of the first semiconductor device is connected with the Vin port; the anode of the second semiconductor device is connected to the Vout port and the cathode is connected to the cathode of the first semiconductor device. According to the utility model, the two semiconductor devices are arranged between the output port and the input port of the NFC chip, so that the problems of different power supply voltages and weak power supply capacity can be solved at lower cost.
Description
Technical Field
The utility model relates to the field of intelligent control of household appliances, in particular to a wire controller and a hardware circuit applying an NFC function.
Background
In the prior art, part of the NFC communication chips have a power-off read-write function, that is, under the condition that the read-write NFC device is powered off, the read-write device (such as a mobile phone) transmits energy to the read-write NFC chip through an NFC radio-frequency field, and the NFC chip supplies power to a power supply inlet Vin of other circuits of the chip by using a power supply output port Vout of the NFC chip. Therefore, the read-write NFC chip can realize self work by utilizing the energy transmitted by radio frequency by read-write equipment such as a mobile phone and the like under the condition that no external power supply is provided.
However, during the application of the NFC chip, the following two problems are often faced: firstly, the voltage of the Vout port and the Vin port of the chip are inconsistent, and the Vout port and the Vin port are directly connected or cause that a product cannot work; and secondly, the power load capacity output by the Vout port of the chip is very low, and if the Vout port of the chip is directly connected with the Vin port, the load connected with Vin of a product is too large, so that the Vout port cannot enable the NFC chip to work when the power is not supplied by Vin.
In summary, it is desirable to design a hardware circuit and a wire controller to solve the above-mentioned problems in the prior art.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, the utility model provides a hardware circuit and a wire controller, which solve the problems of different power supply voltages and weak power supply capacity with lower cost.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a hardware circuit, comprising:
an NFC chip comprising a Vout port and a Vin port; the Vout port is an output port of the radio frequency field energy of the NFC chip, and the Vin port is an input port of a power supply;
an antenna unit electrically connected to the NFC chip;
a first semiconductor device located between the power supply and the Vin port;
a second semiconductor device located between the Vout port and the first semiconductor device;
the first semiconductor device and the second semiconductor device are both diodes;
the anode of the first semiconductor device is connected with the power supply, and the cathode of the first semiconductor device is connected with the Vin port;
the anode of the second semiconductor device is connected to the Vout port and the cathode is connected to the cathode of the first semiconductor device.
In some embodiments of the present invention, the voltage of the power supply is VCC, the output voltage of the Vout port is VDD, and the voltage of VDD is smaller than the voltage of VCC.
In some embodiments of the present invention, the first semiconductor device is a triode and the second semiconductor device is a diode;
the emitter of the first semiconductor device is connected with the power supply; the base electrode of the first semiconductor device is connected with the power supply through a first resistor and is grounded through a second resistor;
the anode of the second semiconductor device is connected to the Vout port and the cathode is connected to the collector of the first semiconductor device.
In some embodiments of the present invention, the transistor is a PNP transistor.
In some embodiments of the present invention, when the power supply is powered on, the first semiconductor device is in a conducting state; the second semiconductor device is in an off state.
In some embodiments of the present invention, when the power supply is powered off, the first semiconductor device is in an off state; the second semiconductor device is in an on state.
In some embodiments of the utility model, a drive-by-wire controller includes the hardware circuit.
Compared with the prior art, the technical scheme of the utility model has the following technical effects:
through setting up two semiconductor devices between the output port and the input port of NFC chip, adopt lower cost can solve because if the direct connection or lead to the unable work of product when the voltage of output port and input port is inconsistent to and the power load ability of output port is very low, if with input port direct connection, because the load of connecting is too big, lead to the technical problem that the output port can't make the NFC chip work when not having the input port power supply.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a first schematic diagram of the hardware circuit connection.
Fig. 2 is a schematic diagram of the hardware circuit connection.
Reference numerals:
100-an antenna module; 200-NFC chip; 210-Vout port; a 220-Vin port; 300-a first semiconductor device; 400-a second semiconductor device; 500-a first resistance; 600-a second resistance; 700-power supply.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
The hardware circuit and the wire controller comprising the hardware circuit can be applied to an indoor unit of an air conditioner, and a control panel on the indoor unit is provided with a communication connection port with the wire controller.
The air conditioner referred to in the present application performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.
The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.
The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.
The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.
The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.
Referring to fig. 1, a hardware circuit includes:
an NFC chip 200 including a Vout port 210 and a Vin port 220; the Vout port 210 is an output port of the NFC chip 220 for radio frequency field energy, and the Vin port 220 is an input port of the power supply 700;
an antenna unit 100 electrically connected to the NFC chip 200;
a first semiconductor device 300 located between the power supply 700 and the Vin port 220;
a second semiconductor device 400 located between the Vout port 210 and the first semiconductor device 300;
wherein the first semiconductor device 300 and the second semiconductor device 400 both employ diodes;
the anode of the first semiconductor device 300 is connected to the power supply 700, and the cathode is connected to the Vin port 220;
the anode of the second semiconductor device 400 is connected to the Vout port 210 and the cathode is connected to the cathode of the first semiconductor device 300.
When the NFC reader approaches the antenna unit 100, radio frequency communication is performed according to the NFC communication protocol, and meanwhile, the NFC chip 200 outputs the voltage VDD through the Vout port 210 through the radio frequency field electric energy acquired by the antenna unit 100. Because the power of the rf field is small, the output voltage VDD at the Vout port 210 is typically low, typically no greater than 3V.
In some embodiments of the present invention, the voltage of the power supply is VCC, the output voltage of the Vout port is VDD, and the voltage of VDD is smaller than the voltage of VCC. The voltage of the power supply of the drive-by-wire product, i.e., the power supply, is typically 5V or 3.3V, so that the power supply 700 cannot be directly connected to the Vout port 210, especially when the voltage of the power supply is 5V.
In some embodiments of the present invention, the power supply 700 can be connected to more loads, such as other loads like a line controller MCU, a display screen, etc.
In some embodiments of the present invention, when the power supply 700 is powered on, the first semiconductor device 300 is in a conducting state; the second semiconductor device 400 is in an off state. At this time, the voltage of VDD is smaller than the voltage of VCC, the anode voltage of the second semiconductor device 400 is larger than the cathode voltage thereof, that is, it is in an off state, which is equivalent to the power supply 700 disconnecting from the Vout port 210, and the power supply 700 supplies power to the NFC chip 200 through the Vin port 220, so that the NFC chip 200 can normally operate.
In some embodiments of the present invention, when the power supply 700 is powered off, the anode voltage of the first semiconductor device 300 is greater than the cathode voltage thereof, i.e. it is in the off state, so the voltage of the Vin port 220 is 0V; when the hardware circuit performs NFC communication, the output voltage of the Vout port 210 is VDD, which is greater than 0V, so that the second semiconductor device 400 is in a conducting state, that is, the Vout port 210 is connected to the Vin port 220 to supply power to the Vin port 220, that is, to supply power to the NFC chip.
In the above technical solution, the first semiconductor device 300 and the second semiconductor device 400 are both diodes, and the hardware circuit is controlled by using the performance that the cathode and the anode of the diode have two states of off and on due to different voltages, so as to solve the problem that the two are not directly connected when the output voltage of the Vout port 210 is less than the voltage of the power supply 700 and the problem that the output voltage of the Vout port 210 cannot be connected to too much load.
In some embodiments of the present invention, referring to fig. 2, the first semiconductor device 300 is a transistor, and the second semiconductor device 400 is a diode;
the emitter of the first semiconductor device 300 is connected to the power supply 700; the base of the first semiconductor device 300 is connected to the power supply 700 through a first resistor 500 and to ground through a second resistor 600.
The anode of the second semiconductor device 400 is connected to the Vout port 210 and the cathode is connected to the collector of the first semiconductor device 300.
In some embodiments of the present invention, the transistor is a PNP transistor.
In some embodiments of the present invention, when the power supply 700 is normally powered on, the second semiconductor device 400 is in an off state, because the voltage of VDD is smaller than the voltage of VCC, and the anode voltage of the second semiconductor device 400 is greater than the cathode voltage thereof, i.e. it is in an off state, which is equivalent to the power supply 700 disconnecting from the Vout port 210. In addition, after the power supply 700 divides the voltage through the first resistor 500 and the second resistor 600, the base voltage of the first semiconductor device 300 is smaller than VCC by more than 0.7V, so that the first semiconductor device 300 is in a conducting state, and the power supply 700 supplies power to the NFC chip 200 through the Vin port 220, so that the NFC chip 200 can normally work.
In some embodiments of the present invention, when the power supply 700 is powered off, the base voltage of the first semiconductor device 300 is 0V, the output voltage of the Vout port 210 is above 0.7V, so the first semiconductor device 300 is in the off state, and the voltage of the Vin port 220 is 0V because the collector voltage of the first semiconductor device 300 is 0V; when the hardware circuit performs NFC communication, the output voltage of the Vout port 210 is VDD, which is greater than 0V, so that the second semiconductor device 400 is in a conducting state, that is, the Vout port 210 is connected to the Vin port 220 to supply power to the Vin port 220, that is, to supply power to the NFC chip.
In some embodiments of the utility model, a drive-by-wire controller includes the hardware circuit. The wire controller product can also be used for controlling an indoor unit of an air conditioner, and the NFC chip 200 can be read and written by a mobile phone to realize the visual configuration of the setting parameters of the wire controller; in the prior art, the operation of parameter configuration by the keys of the line controller is complex and inconvenient. The visual reading of the whole machine operation parameters stored in the wire controller can also be realized; the operation of reading the operation parameters through the keys of the line controller in the prior art is complex and inconvenient.
Compared with the prior art, the technical scheme of the utility model has the following technical effects:
through setting up two semiconductor devices between the output port and the input port of NFC chip, this hardware circuit is simple reliable, adopts lower cost can solve because if the direct connection or lead to the unable work of product when the voltage of output port and input port is inconsistent to and the power load ability of output port is very low, if with input port direct connection, because the load of connecting is too big, lead to the technical problem that the output port can't make the work of NFC chip when not having the input port power supply.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A hardware circuit, comprising:
an NFC chip comprising a Vout port and a Vin port; the Vout port is an output port of the radio frequency field energy of the NFC chip, and the Vin port is an input port of a power supply;
an antenna unit electrically connected to the NFC chip;
a first semiconductor device located between the power supply and the Vin port;
a second semiconductor device located between the Vout port and the first semiconductor device;
the first semiconductor device and the second semiconductor device are both diodes;
the anode of the first semiconductor device is connected with the power supply, and the cathode of the first semiconductor device is connected with the Vin port;
the anode of the second semiconductor device is connected to the Vout port and the cathode is connected to the cathode of the first semiconductor device.
2. The hardware circuit of claim 1, wherein the voltage of the power supply is VCC, the output voltage of the Vout port is VDD, and the voltage of VDD is smaller than the voltage of VCC.
3. A hardware circuit according to claim 1, wherein said first semiconductor device is a transistor and said second semiconductor device is a diode;
the emitter of the first semiconductor is connected with the power supply; the base electrode of the first semiconductor is connected with the power supply through a first resistor and is grounded through a second resistor;
the anode of the second semiconductor device is connected to the Vout port and the cathode is connected to the collector of the first semiconductor device.
4. A hardware circuit according to claim 3, wherein the transistor is a PNP transistor.
5. The hardware circuit of claim 1, wherein when said power supply is powered on, said first semiconductor device is in a conducting state; the second semiconductor device is in an off state.
6. The hardware circuit of claim 1, wherein when said power supply is powered off, said first semiconductor device is in an off state; the second semiconductor device is in an on state.
7. A drive-by-wire comprising a hardware circuit as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122550080.6U CN216083722U (en) | 2021-10-22 | 2021-10-22 | Hardware circuit and wire controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122550080.6U CN216083722U (en) | 2021-10-22 | 2021-10-22 | Hardware circuit and wire controller |
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| Publication Number | Publication Date |
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| CN216083722U true CN216083722U (en) | 2022-03-18 |
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| CN202122550080.6U Active CN216083722U (en) | 2021-10-22 | 2021-10-22 | Hardware circuit and wire controller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114007210A (en) * | 2021-10-29 | 2022-02-01 | 青岛海信日立空调系统有限公司 | Drive-by-wire ware and air conditioner |
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- 2021-10-22 CN CN202122550080.6U patent/CN216083722U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114007210A (en) * | 2021-10-29 | 2022-02-01 | 青岛海信日立空调系统有限公司 | Drive-by-wire ware and air conditioner |
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