CN215813801U - Electrical apparatus interface arrangement and electrical equipment - Google Patents
Electrical apparatus interface arrangement and electrical equipment Download PDFInfo
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- CN215813801U CN215813801U CN202121881578.4U CN202121881578U CN215813801U CN 215813801 U CN215813801 U CN 215813801U CN 202121881578 U CN202121881578 U CN 202121881578U CN 215813801 U CN215813801 U CN 215813801U
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Abstract
The utility model relates to an electrical appliance interface device and electrical equipment. The device comprises a composite conversion circuit and a change-over switch, wherein the composite conversion circuit is used for connecting an input device and a controller of an electric appliance, and the change-over switch is connected with the composite conversion circuit and is also used for connecting a power supply and the controller. When a working instruction is received, the composite conversion circuit is conducted to start working, data transmission between the input device and the controller can be achieved, the change-over switch is conducted at the moment, and the power supply can supply power to the controller to enable the controller to work normally. When a standby instruction is received, the composite conversion circuit is disconnected, data transmission is not carried out between the input device and the controller, the change-over switch is disconnected, the controller cannot be connected with a power supply, the work is stopped, the standby power consumption is extremely low, the energy is saved, and the working reliability of the electric appliance is improved.
Description
Technical Field
The utility model relates to the technical field of electric appliances, in particular to an electric appliance interface device and electric appliance equipment.
Background
With the rapid development of the single chip microcomputer technology, the electric appliance becomes more intelligent, scientific and humanized, and the use viscosity and the use frequency are increased. For example, the conventional control methods of the electrical appliance are all physical keys, including a push type and a knob type, but with the development of the technology, the touch type keys gradually replace the above control methods, so that the use convenience of the electrical appliance is improved.
The realization of touch control needs to be based on an input module and a transmission mechanism control module, and the transmission mechanism control module works according to a received instruction from the input module. The transmission mechanism control module is internally provided with a main computer board, and when the electric appliance is in standby, other devices are controlled to reduce power consumption through an internal mode in the main computer board. However, the standby mode still generates power consumption, and the energy loss generated after the accumulated use is large. And the types and the number of the electrical appliances are various, and the standby loss of each electrical appliance is added up to consume a large amount of power generation resources, so that energy loss is caused, and the environment is damaged. Therefore, the conventional electric appliances have low operational reliability.
SUMMERY OF THE UTILITY MODEL
Accordingly, it is necessary to provide an electrical interface device and an electrical apparatus for solving the problem of low operational reliability of the conventional electrical apparatus.
An appliance interface device, comprising:
the composite conversion circuit is used for connecting an input device and a controller of an electric appliance;
the change-over switch is connected with the composite conversion circuit and is also used for connecting a power supply and the controller;
the composite conversion circuit is switched on when receiving a working instruction and switched off when receiving a standby instruction, and the change-over switch is switched on when the composite conversion circuit is switched on and switched off when the composite conversion circuit is switched off.
An electrical appliance comprises an input device, a controller and the electrical appliance interface device.
The electrical appliance interface device and the electrical appliance equipment comprise a composite conversion circuit and a change-over switch, wherein the composite conversion circuit is used for connecting an input device and a controller of an electrical appliance, the change-over switch is connected with the composite conversion circuit and is also used for connecting a power supply and the controller, the composite conversion circuit is switched on when receiving a working instruction and is switched off when receiving a standby instruction, and the change-over switch is switched on when the composite conversion circuit is switched on and is switched off when the composite conversion circuit is switched off. When a working instruction is received, the composite conversion circuit is conducted to start working, data transmission between the input device and the controller can be achieved, the change-over switch is conducted at the moment, and the power supply can supply power to the controller to enable the controller to work normally. When a standby instruction is received, the composite conversion circuit is disconnected, data transmission is not carried out between the input device and the controller, the change-over switch is disconnected, the controller cannot be connected with a power supply, the work is stopped, the standby power consumption is extremely low, the energy is saved, and the working reliability of the electric appliance is improved.
In one embodiment, the composite conversion circuit comprises a photoelectric coupler, a pull-down resistor, a first diode and a second diode, wherein the photoelectric coupler comprises a light emitter and a light receiver;
the light emitter is used for being connected with the input device, the anode of the first diode is connected with the change-over switch, the anode of the second diode is used for being connected with a non-isolated power supply, the cathode of the first diode and the cathode of the second diode are both connected with the first end of the light receiver, the second end of the light receiver is grounded through the pull-down resistor, and the second end of the light receiver is further connected with the controller.
In one embodiment, the change-over switch includes a first switch tube, a first resistor and a second resistor, a control terminal of the first switch tube is connected to an anode of the first diode, a first terminal of the first switch tube is used for connecting a power supply, a second terminal of the first switch tube is connected to the first resistor and the controller, the first resistor is connected to the second resistor, a common terminal of the first resistor and the second resistor is connected to the control terminal of the first switch tube, and one terminal of the second resistor, which is not connected to the first resistor, is connected to the first terminal of the first switch tube.
In one embodiment, the electrical interface device further includes a current limiter, and the control terminal of the first switching tube is connected to the anode of the first diode through the current limiter.
In one embodiment, the composite conversion circuit further includes a second switch tube, a third resistor and a fourth resistor, wherein one end of the second resistor, which is not connected to the first resistor, is connected to the first end of the second switch tube, a control end of the second switch tube is connected to the third resistor, both the third resistor and the second end of the second switch tube are grounded, and the control end of the second switch tube is connected to the controller through the fourth resistor.
In one embodiment, the electrical interface device further comprises a front-end circuit, and the composite conversion circuit is connected with the input device through the front-end circuit.
In one embodiment, the front-end circuit includes a third switch tube, a first current-limiting resistor, a second current-limiting resistor, and a pull-up resistor, where one end of the first current-limiting resistor is connected to the first end of the light emitter, and the other end of the first current-limiting resistor is connected to the pull-up resistor, one end of the pull-up resistor, which is not connected to the first current-limiting resistor, is connected to the second current-limiting resistor, one end of the second current-limiting resistor, which is not connected to the pull-up resistor, is connected to the control end of the third switch tube, the first end of the third switch tube is connected to the second end of the light emitter, and the second end of the third switch tube is grounded.
In one embodiment, the electrical interface device further comprises a voltage stabilizing circuit, and the voltage stabilizing circuit is connected with the selector switch.
In one embodiment, the electrical interface device further comprises a voltage conversion circuit, wherein the voltage conversion circuit is used for connecting a power supply and is connected with the composite conversion circuit.
Drawings
FIG. 1 is a block diagram of an electrical interface device according to one embodiment;
FIG. 2 is a block diagram of an electrical configuration device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described more fully below by way of examples in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In one embodiment, an appliance interface device is provided. The electric appliance interface device can be applied to an electric appliance with an operation key and a control driving board, wherein the operation key can be a touch screen or a physical key and the like. The types of electrical appliances include, but are not limited to, range hoods, electric cookers, air conditioners, refrigerators, health preserving kettles, air fryers, and the like. Referring to fig. 1, the electrical interface device includes a composite converting circuit 100 and a switch 200, the composite converting circuit 100 is used for connecting an input device and a controller of an electrical appliance, the switch 200 is connected to the composite converting circuit 100 and is also used for connecting a power supply and the controller, the composite converting circuit 100 is turned on when receiving a working instruction and is turned off when receiving a standby instruction, and the switch 200 is turned on when the composite converting circuit 100 is turned on and is turned off when the composite converting circuit 100 is turned off. When a work instruction is received, the composite conversion circuit 100 is turned on to start working, data transmission between the input device and the controller can be realized, and the changeover switch 200 is turned on at the moment, so that the power supply can supply power to the controller, and the controller can work normally. When a standby instruction is received, the composite conversion circuit 100 is switched off, data transmission is not performed between the input device and the controller, the change-over switch 200 is switched off, the controller cannot be connected to a power supply, the work is stopped, the standby power consumption is extremely low, the energy is saved, and the working reliability of the electric appliance is improved.
Specifically, the input device and the controller may be devices of the electric appliance itself, the input device is used for receiving a user instruction, and the controller is connected to the input device and is used for controlling the working state of other devices according to the user instruction received by the input device, so as to realize the on-demand work of the electric appliance. The input device can be a human-computer interaction device, the human-computer interaction device can not only receive user instructions and send the received user instructions to the controller, but also can display information, and a user can conveniently know the working state of the electric appliance in time. Furthermore, the human-computer interaction device can be a touch screen and the like, and can be selected according to actual requirements. The controller can be a single chip microcomputer, and the single chip microcomputer has the advantages of high integration level, small size, low power consumption and good reliability. It is understood that the controller may be other types of devices as long as one skilled in the art recognizes that this may be achieved.
The composite converting circuit 100 is used for connecting an input device of an electrical appliance and a controller, i.e. the input device is connected with the controller through the composite converting circuit 100. Further, a three-wire system communication mode is adopted between the composite conversion circuit 100 and the input device, and the input device transmits a signal to the composite conversion circuit 100 in a single direction through a UART serial port. The composite conversion circuit 100 and the controller also adopt a three-wire system communication mode, so that a complex interface with high cost and high failure rate between the input device and the controller is avoided, the three-wire system communication mode is adopted to be connected with an external device, precious IO port resources are saved, the composite conversion circuit has the great advantage of wiring harness quantity, the use cost is low, the mounting is convenient, and the failure rate and the maintenance rate are reduced.
The switch 200 is connected to the composite converting circuit 100, and switches its own working state according to the working state of the composite converting circuit 100, specifically, it can switch its own on or off state according to the high and low levels output by the composite converting circuit 100. The switch 200 is also used to connect a power source, which may be a dc voltage source, to the controller. When the composite conversion circuit 100 receives the operation command, it is considered that the electrical equipment needs to operate at this time. When the composite conversion circuit 100 is turned on when receiving a working instruction, the composite conversion circuit 100 starts to work, and the change-over switch 200 is switched to an on position, so that power can be supplied to the controller, and the controller can work normally. The compound switching circuit 100 also transmits data from the input device to the controller. The composite switching circuit 100 plays two roles, one is responsible for turning on the switch 200, and the other is responsible for transmitting the data exchanged by the input device to the controller without loss, which is also called a wake-up process.
When the composite conversion circuit 100 receives the standby instruction, it is considered that the electrical appliance needs to be in standby or stopped at that time. At this time, the composite converting circuit 100 is turned off, and the switch 200 is also turned off. When the appliance starts to stand by, the compound switching circuit 100 is turned off, first the controller is stopped/standby, and then the changeover switch 200 is turned off, so that the controller is completely free of current, which is called an entering process. The change-over switch 200 and the composite conversion circuit 100 are used in the awakening and entering process, the process is skillfully completed by two modules, a three-wire system is still used for external connection, precious IO port resources are saved, the wiring harness quantity great advantage is achieved, the cost is reduced, and the installation is more convenient.
In one embodiment, referring to fig. 2, the composite converting circuit 100 includes a photo coupler U4, a pull-down resistor R17, a first diode D4, and a second diode D6, and the photo coupler U4 includes a light emitter and a light receiver. The light emitter is used for being connected with an input device, the anode of the first diode D4 is connected with the change-over switch 200, the anode of the second diode D6 is used for being connected with a non-isolated power supply, the cathode of the first diode D4 and the cathode of the second diode D6 are both connected with the first end of the light receiver, the second end of the light receiver is grounded through a pull-down resistor R17, and the second end of the light receiver is further connected with the controller. The photoelectric coupler U4 uses light as medium to transmit electric signal, has good isolation effect on input and output electric signals, and can improve the anti-interference capability of the electric interface device when applied to the electric interface device.
Specifically, the photocoupler U4 includes a light emitter and a light receiver, and the specific types of the light emitter and the light receiver are not unique, and take the light emitter as an infrared light emitting diode and the light receiver as a photosensitive semiconductor tube as an example, the infrared light emitting diode is connected to the input device, specifically, the anode of the infrared light emitting diode is connected to the input device, and the cathode of the infrared light emitting diode is grounded. The input end of the photosensitive semiconductor tube is connected with the cathode of the first diode D4 and the cathode of the second diode D6, and the output end of the photosensitive semiconductor tube is grounded through a pull-down resistor R17. When the anode of the infrared light-emitting diode is connected with the working instruction current from the input device and flows to the cathode of the infrared light-emitting diode, the infrared light-emitting diode emits light. The photosensitive semiconductor tube generates photocurrent after receiving light, the photocurrent flows out from the output end, and the photocurrent-light-electricity conversion is realized by grounding through the pull-down resistor R17. When the light receiver of the photocoupler U4 is turned on, the first diode D4 and the second diode D6 are both turned on, the anode of the second diode D6 is connected to the non-isolated power supply, and the second end of the light receiver is connected to the controller and can transmit signals to the controller. The anode of the first diode D4 is connected to the switch 200, and when the first diode D4 is turned on, the switch 200 is also turned on, so that the controller is connected to the power supply and works normally. The photoelectric coupler U4 couples the input end signal to the output end by using light as medium, has the advantages of small volume, no contact, long service life, strong anti-interference capability and the like, and can improve the working performance of the electric appliance interface device when being applied to the electric appliance interface device. It is understood that in other embodiments, the light emitter and the light receiver may be other types of devices, and the composite conversion circuit 100 may have other structures, as long as those skilled in the art can realize the composite conversion circuit.
In an embodiment, referring to fig. 2, the switch 200 includes a first switch Q1, a first resistor R3, and a second resistor R4, a control terminal of the first switch Q1 is connected to an anode of a first diode D4, a first terminal of the first switch Q1 is used for connecting to a power supply, a second terminal of the first switch Q1 is connected to the first resistor R3 and a controller, the first resistor R3 is connected to the second resistor R4, a common terminal of the first resistor R3 and the second resistor R4 is connected to the control terminal of the first switch Q1, and a terminal of the second resistor R4, which is not connected to the first resistor R3, is connected to the controller.
Specifically, the first resistor R3 and the second resistor R4 are connected in series, one end of the series connection is connected to the second end of the first switch tube Q1 and is connected to the controller, the other end of the series connection is connected to the first end of the first switch tube Q1, the common connection end of the first resistor R3 and the second resistor R4 is connected to the anode of the first diode D4, and the first resistor R3 and the second resistor R4 are used as the matching resistor of the first switch tube Q1 and are matched with the first switch tube Q1 to be turned on or turned off. The magnitude of the power supply connected to the first switching tube Q1 is not fixed, and may be, for example, 15V or a power supply of another value. The type of the first switch Q1 is not exclusive, and may be, for example, a MOS transistor, and specifically, a P-channel MOS transistor, where a gate of the MOS transistor is connected to the anode of the first diode D4, a source of the MOS transistor is connected to the first resistor R3, and a drain of the MOS transistor is connected to the power supply. When receiving the operation command, the light receiver of the photocoupler U4 is turned on, and both the first diode D4 and the second diode D6 are turned on. When the first diode D4 is turned on, the first switch Q1 is turned on, the +15V power supply is turned on, the system is powered normally, and the controller starts to operate, which may be referred to as a wake-up process. When the switch 200 includes the first switch tube Q1, the first resistor R3 and the second resistor R4, the switching speed is fast, the performance is stable, and the improvement of the working performance of the electrical interface device is facilitated. It is understood that in other embodiments, the switch 200 may have other configurations, as long as the implementation is considered by those skilled in the art.
In one embodiment, referring to fig. 2, the electrical interface device further includes a current limiter R8, and the control terminal of the first switch Q1 is connected to the anode of the first diode D4 through the current limiter R8. When the first switch Q1 is turned on and connected to the power supply, the current limiting device R8 can limit the current transmitted to the first diode D4 through the switch, so as to prevent the first diode D4 from being burned out by the excessive current, thereby protecting the first diode D4. The type of the current limiter R8 is not exclusive, and in this embodiment, the current limiter R8 may be a current limiting resistor, which is low in cost, and it is understood that in other embodiments, the current limiter R8 may have other structures as long as those skilled in the art can realize the current limiter.
In an embodiment, referring to fig. 2, the composite converting circuit 100 further includes a second switch Q2, a third resistor R7, and a fourth resistor R10, wherein one end of the second resistor R4, which is not connected to the first resistor R3, is connected to the first end of the second switch Q2, a control end of the second switch Q2 is connected to the third resistor R7, second ends of the third resistor R7 and the second switch Q2 are both grounded, and the control end of the second switch Q2 is connected to the controller through the fourth resistor R10.
Specifically, the third resistor R7 and the fourth resistor R10 are resistors matching the second switch Q2, and can help the second switch Q2 to conduct. The control end of the second switch tube Q2 is connected with the controller through the fourth resistor R10, and can receive the enable signal from the controller, when the controller outputs a high level to the second switch tube Q2, the second switch tube Q2 is turned on, the second switch tube Q2 is connected with the first switch tube Q1 through the second resistor R4, and when the second switch tube Q2 is turned on, the first switch tube Q1 can be always in a conducting state, so that the controller can be stably connected with a power supply, and the use reliability of the electrical apparatus interface device is improved. The second switch Q2 is not exclusive, and may be, for example, a transistor, a base of the transistor is connected to the third resistor R7 and the fourth resistor R10, a collector of the transistor is connected to the second resistor R4, and an emitter of the transistor is connected to the third resistor R7.
In one embodiment, referring to fig. 2, the electrical interface device further includes a front-end circuit 300, and the composite converting circuit 100 is connected to the input device through the front-end circuit 300. The input device transmits signals to the composite conversion circuit 100 through the front-end circuit 300, and the front-end circuit 300 can process the signals from the input device and then transmit the signals to the composite conversion circuit 100, so that the quality of the transmitted signals is improved.
The structure of the front-end circuit 300 is not exclusive, referring to fig. 2, in an embodiment, the front-end circuit 300 includes a third switch Q3, a first current-limiting resistor R13, a second current-limiting resistor R21 and a pull-up resistor R16, one end of the first current-limiting resistor R13 is connected to the first end of the light emitter, the other end is connected to the pull-up resistor R16, one end of the pull-up resistor R16, which is not connected to the first current-limiting resistor R13, is connected to the second current-limiting resistor R21, one end of the second current-limiting resistor R21, which is not connected to the pull-up resistor R16, is connected to the control end of the third switch Q3, the first end of the third switch Q3 is connected to the second end of the light emitter, and the second end of the third switch Q3 is grounded.
Specifically, one end of the first current limiting resistor R13 is connected to the first end of the light emitter for limiting the amount of current transmitted to the light emitter and preventing the light emitter from being burned out due to excessive current. The end of the second current limiting resistor R21 not connected to the pull-up resistor R16 is connected to the control end of the third switching transistor Q3, and is used for limiting the current transmitted to the third switching transistor Q3 and preventing the third switching transistor Q3 from being burnt out due to excessive current. One end of the pull-up resistor R16 is connected to the first current-limiting resistor R13 and the second current-limiting resistor R21, so that the third switching tube Q3 can be turned on by default. Further, the front end circuit 300 is connected to three ports of the input device, and a capacitor may be disposed between two ports for filtering, so as to improve signal quality. The input device is connected to a second current limiting resistor R21 through a UART data line, and the second current limiting resistor R21 is connected to the control terminal of the third switching transistor Q3. When the signal transmitted by the input device through the UART data line is at a high level, the third switching tube Q3 is turned on, the photocoupler U4 is turned on, the switch 200 is also turned on, and the controller is powered on to start operating, and can receive the signal from the input device. Data communication, low-power-consumption entering and awakening are completed through 1 data line, and the structure is simple. It is understood that the structure of the front-end circuit 300 may be other in other embodiments, as long as one skilled in the art can realize the structure.
In one embodiment, referring to fig. 2, the electrical interface device further includes a voltage stabilizing circuit 400, and the voltage stabilizing circuit 400 is connected to the switch 200. The voltage stabilizing circuit 400 can make the switch 200 operate at a stable voltage, thereby improving the working performance of the switch 200. In addition, the voltage stabilizing circuit 400 may be further connected to a controller, and the power supply is connected to the controller through the switch 200 and the voltage stabilizing circuit 400, which may improve the stability of the voltage transmitted to the controller, thereby improving the working performance of the controller. The structure of the voltage stabilizing circuit 400 is not unique, referring to fig. 2, in this embodiment, the voltage stabilizing circuit 400 may include a voltage stabilizing chip U2 and a matching capacitor C3, the voltage stabilizing chip U2 is connected to the switch 200 to implement a voltage stabilizing function, and the matching capacitor C3 may play a role in filtering. In addition, when the switch 200 includes the first switch Q1, the regulator chip U2 and the matching capacitor C3 are both connected to the second terminal of the first switch Q1. It is understood that the voltage stabilizing circuit 400 may have other structures in other embodiments, as long as the implementation is considered by those skilled in the art.
In one embodiment, referring to fig. 2, the electrical interface device further includes a voltage conversion circuit 500, and the voltage conversion circuit 500 is used for connecting to a power supply and is connected to the composite conversion circuit 100. The voltage conversion circuit 500 may convert the voltage to operate the connected devices within a suitable range. The voltage conversion circuit 500 may be connected to a power supply, and transmit the power supply to the composite conversion circuit 100 after the voltage of the power supply is reduced, so that the composite conversion circuit 100 operates normally.
Specifically, the structure of the voltage converting circuit 500 is not exclusive, and in the embodiment, referring to fig. 2, the voltage converting circuit 500 may include a voltage converting chip U1, a first capacitor C4, a second capacitor C5 and a third capacitor C2, taking the composite converting circuit 100 further includes a second switch tube Q2, a third resistor R7 and a fourth resistor R10, the switch 200 includes a first switch tube Q1, a first resistor R3 and a second resistor R4 as an example, a VIN port of the voltage converting chip U1 is connected to a first end of the first switch tube Q1, a first end of the ground switch tube is connected to a first end of the first capacitor C4, a first end of the second capacitor C5 and a first end of the third capacitor C2 are both connected to a VOUT port of the voltage converting chip U1 and are also used for accessing a +5V non-isolated power supply, and a second end of the first capacitor C4, a second end of the second capacitor C5, a second end of the third capacitor C2 and a GND port of the voltage converting chip U1 are all grounded. It is understood that in other embodiments, the voltage converting circuit 500 may have other structures as long as those skilled in the art can realize the above.
For a better understanding of the above embodiments, the following detailed description is given in conjunction with a specific embodiment. In one embodiment, referring to fig. 1-2, the electrical interface device includes a composite conversion circuit 100 and a switch 200, the controller is a single chip (non-isolated), and the input device is a human-computer interaction device. The electrical appliance interface device adopts a three-wire system communication mode, when equipment starts to work, the composite conversion circuit 100 starts to work, firstly, the change-over switch 200 is switched to an open position, the power supply can be ensured to be supplied for a single chip microcomputer (non-isolated) to work, the change-over switch 200 is always ensured to be conducted, meanwhile, data are transmitted into the single chip microcomputer (non-isolated), the composite conversion circuit 100 serves as 2 roles, firstly, the composite conversion circuit is responsible for opening the change-over switch 200, secondly, the data of human-computer interaction are transmitted to the single chip microcomputer (non-isolated) in a lossless mode, and the process is also called a wake-up process.
When the standby is started, the composite conversion circuit 100 controls the single chip microcomputer (non-isolated) to stop/standby, and then switches off the change-over switch 200, so that the single chip microcomputer (non-isolated) has no current completely, and the process is called an entering process. The change-over switch 200 and the composite conversion circuit 100 are used in the awakening and entering process, the process is completed ingeniously by 2 modules, a three-wire system is still used externally, precious IO port resources are saved, the wiring harness quantity great advantage is achieved, the cost is reduced, and the installation is convenient. The number of the wire harnesses is reduced, functions are not reduced, the low-power-consumption change-over switch 200 is added, and resources and functions are well integrated. The electric appliance interface device cuts off the power supply in a low power consumption mode, the standby power consumption is extremely low, no current can be basically achieved, and the energy consumption is saved.
Specifically, the CON-3 terminal is a touch panel interface of a man-machine interaction device, and power supply isolation is optically coupled by a power supply, a ground, a data line (URT) and the PC 817C. When URT is equal to high level, Q3 is conducted, the internal transmitting terminal of PC817C is conducted, the receiving terminal is conducted, D4 and D6 are conducted, RXD0 is high level, and RXD0 is connected with the controller. Because D4 is conducted, Q1 is conducted, the +15V power supply is started, the +5V _ P power supply is started, the power supply of the whole system is normal, the controller starts to operate, the +15V _ EN is controlled to output high level Q2 to be conducted, and the +15V is guaranteed to be in a starting state all the time. The whole process is in an awakening state. During the +15V _ EN period, the waveform of data communication does not affect the on-off of the power supply. When viewed from a power supply end, a user controls the switch to be divided into 2 paths, wherein the paths R8 and D4 are wake-up paths, and the paths R4 and Q2 are switch paths, and the wake-up paths can affect the switch paths, but the switch paths cannot affect the wake-up paths. The communication adopts UART serial port one-way transmission, only 1 data line is used, and data communication, low power consumption entering and awakening are completed.
The electrical appliance interface device comprises a composite conversion circuit 100 and a change-over switch 200, wherein the composite conversion circuit 100 is used for connecting an input device and a controller of an electrical appliance, the change-over switch 200 is connected with the composite conversion circuit 100 and is also used for connecting a power supply and the controller, the composite conversion circuit 100 is switched on when receiving a working instruction and is switched off when receiving a standby instruction, and the change-over switch 200 is switched on when the composite conversion circuit 100 is switched on and is switched off when the composite conversion circuit 100 is switched off. When a work instruction is received, the composite conversion circuit 100 is turned on to start working, data transmission between the input device and the controller can be realized, and the changeover switch 200 is turned on at the moment, so that the power supply can supply power to the controller, and the controller can work normally. When a standby instruction is received, the composite conversion circuit 100 is switched off, data transmission is not performed between the input device and the controller, the change-over switch 200 is switched off, the controller cannot be connected to a power supply, the work is stopped, the standby power consumption is extremely low, the energy is saved, and the working reliability of the electric appliance is improved.
In one embodiment, an appliance device is provided, comprising an input device, a controller and an appliance interface device as described above.
The electrical equipment comprises a composite conversion circuit 100 and a change-over switch 200, wherein the composite conversion circuit 100 is used for connecting an input device and a controller of the electrical equipment, the change-over switch 200 is connected with the composite conversion circuit 100 and is also used for connecting a power supply and the controller, the composite conversion circuit 100 is switched on when receiving a working instruction and is switched off when receiving a standby instruction, and the change-over switch 200 is switched on when the composite conversion circuit 100 is switched on and is switched off when the composite conversion circuit 100 is switched off. When a work instruction is received, the composite conversion circuit 100 is turned on to start working, data transmission between the input device and the controller can be realized, and the changeover switch 200 is turned on at the moment, so that the power supply can supply power to the controller, and the controller can work normally. When a standby instruction is received, the composite conversion circuit 100 is switched off, data transmission is not performed between the input device and the controller, the change-over switch 200 is switched off, the controller cannot be connected to a power supply, the work is stopped, the standby power consumption is extremely low, the energy is saved, and the working reliability of the electric appliance is improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within 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 invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An electrical interface device, comprising:
the composite conversion circuit is used for connecting an input device and a controller of an electric appliance;
the change-over switch is connected with the composite conversion circuit and is also used for connecting a power supply and the controller;
the composite conversion circuit is switched on when receiving a working instruction and switched off when receiving a standby instruction, and the change-over switch is switched on when the composite conversion circuit is switched on and switched off when the composite conversion circuit is switched off.
2. The electrical interface device according to claim 1, wherein the composite conversion circuit comprises a photo coupler, a pull-down resistor, a first diode, and a second diode, the photo coupler comprising a light emitter and a light receiver;
the light emitter is used for being connected with the input device, the anode of the first diode is connected with the change-over switch, the anode of the second diode is used for being connected with a non-isolated power supply, the cathode of the first diode and the cathode of the second diode are both connected with the first end of the light receiver, the second end of the light receiver is grounded through the pull-down resistor, and the second end of the light receiver is further connected with the controller.
3. The electrical interface device according to claim 2, wherein the switch comprises a first switch tube, a first resistor and a second resistor, a control terminal of the first switch tube is connected to an anode of the first diode, a first terminal of the first switch tube is used for connecting to a power supply, a second terminal of the first switch tube is connected to the first resistor and the controller, the first resistor is connected to the second resistor, a common terminal of the first resistor and the second resistor is connected to the control terminal of the first switch tube, and a terminal of the second resistor, which is not connected to the first resistor, is connected to the first terminal of the first switch tube.
4. The electrical interface device as claimed in claim 3, further comprising a current limiter, wherein the control terminal of the first switch tube is connected to the anode of the first diode through the current limiter.
5. The electrical interface device according to claim 3, wherein the composite conversion circuit further comprises a second switch tube, a third resistor and a fourth resistor, wherein one end of the second resistor not connected to the first resistor is connected to the first end of the second switch tube, the control end of the second switch tube is connected to the third resistor, the third resistor and the second end of the second switch tube are both grounded, and the control end of the second switch tube is connected to the controller through the fourth resistor.
6. The electrical interface device of claim 2, further comprising a front end circuit, wherein the composite switching circuit is coupled to the input device via the front end circuit.
7. The electrical interface device according to claim 6, wherein the front-end circuit comprises a third switch tube, a first current-limiting resistor, a second current-limiting resistor, and a pull-up resistor, wherein one end of the first current-limiting resistor is connected to the first end of the light emitter, the other end of the first current-limiting resistor is connected to the pull-up resistor, one end of the pull-up resistor, which is not connected to the first current-limiting resistor, is connected to the second current-limiting resistor, one end of the second current-limiting resistor, which is not connected to the pull-up resistor, is connected to the control end of the third switch tube, the first end of the third switch tube is connected to the second end of the light emitter, and the second end of the third switch tube is grounded.
8. The electrical interface device of claim 1, further comprising a voltage regulator circuit, said voltage regulator circuit being connected to said diverter switch.
9. The electrical interface device of claim 1, further comprising a voltage conversion circuit configured to be coupled to a power source and to be coupled to the composite conversion circuit.
10. An electrical appliance comprising an input device, a controller and an appliance interface device as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121881578.4U CN215813801U (en) | 2021-08-12 | 2021-08-12 | Electrical apparatus interface arrangement and electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121881578.4U CN215813801U (en) | 2021-08-12 | 2021-08-12 | Electrical apparatus interface arrangement and electrical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215813801U true CN215813801U (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121881578.4U Active CN215813801U (en) | 2021-08-12 | 2021-08-12 | Electrical apparatus interface arrangement and electrical equipment |
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| Country | Link |
|---|---|
| CN (1) | CN215813801U (en) |
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2021
- 2021-08-12 CN CN202121881578.4U patent/CN215813801U/en active Active
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Effective date of registration: 20230816 Address after: Room 301, Building E, Tianyou Maker Industrial Park, No. 2 Lixin Road, Qiaotou Community, Fuhai Street, Bao'an District, Shenzhen City, Guangdong Province, 518000 Patentee after: Shenzhen Yici Intelligent Control Co.,Ltd. Address before: Xinhuike office building, 2045 sightseeing Road, Baihua community, Guangming Street, Guangming District, Shenzhen, Guangdong 518000 Patentee before: SHENZHEN CHK Co.,Ltd. |
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