Electric appliance and control device therefor

Abstract

The application discloses an electric appliance and a control device thereof. The electric appliance comprises at least one first mechanical switch and a first power supply circuit. The control device comprises a parameter adjustment circuit, a control circuit and a parameter adjustment circuit. The parameter adjustment circuit is connected with the at least one first mechanical switch and the first power supply circuit respectively, and is configured to detect the switching state of the at least one first mechanical switch and generate an adjustment signal, so that the first power supply circuit adjusts the electric parameter outputted by itself based on the adjustment signal. The control circuit is connected with the first power supply circuit, and is configured to determine the switching state of the at least one first mechanical switch according to the electric parameter. The control device can realize the switching state detection function of the one or more first mechanical switches by multiplexing the power supply circuit in the electric appliance, thereby reducing the hardware cost of the control device for realizing the switching state detection function.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of household appliances, in particular to an appliance and a control device thereof. BACKGROUND

[0002] In various household appliances, a mechanical switch is usually used to control the connection relationship between the household appliance and the live wire, so as to manually control the power supply state of the household appliance by the customer. At the same time, the power supply state of the mechanical switch needs to be detected in some application scenarios, for example, in a bath heater device, the bath heater device usually sets a display panel to display the power supply state of the internal fan, lighting device and heating device, so as to improve the user experience. For this purpose, the related art usually adds an optical coupling detection at the input end of each device to detect the switch state of the corresponding mechanical switch. However, this scheme needs to use high-cost optical coupling elements, and therefore has the problem of high hardware cost. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the related art. To this end, a first object of the present application is to provide a control device of an appliance, which detects the switch state of at least one first mechanical switch through a parameter adjustment circuit and generates an adjustment signal, so that a first power supply circuit in the appliance can adjust the electrical parameter output by itself based on the adjustment signal, and a control circuit determines the switch state of the first mechanical switch according to the electrical parameter, thereby realizing the switch state detection function of one or more first mechanical switches in the appliance by multiplexing the power supply circuit in the appliance, and effectively reducing the hardware cost of the control device for realizing the switch state detection function.

[0004] A second object of the present application is to provide an appliance.

[0005] To achieve the above-mentioned objects, a control device of an appliance is provided according to a first aspect of the present application, the appliance comprising at least one first mechanical switch and a first power supply circuit, the device comprising: a parameter adjustment circuit, the parameter adjustment circuit being connected to the at least one first mechanical switch and the first power supply circuit respectively, and being configured to detect the switch state of the at least one first mechanical switch and generate an adjustment signal, so that the first power supply circuit adjusts the electrical parameter output by itself based on the adjustment signal; a control circuit, the control circuit being connected to the first power supply circuit, and being configured to determine the switch state of the at least one first mechanical switch according to the electrical parameter.

[0006] The control device according to the embodiment of the present application detects the switch state of the at least one first mechanical switch through the parameter adjusting circuit and generates an adjusting signal, so that the first power supply circuit in the electrical appliance can adjust the electrical parameter output by itself based on the adjusting signal, and the control circuit determines the switch state of the first mechanical switch according to the electrical parameter, thereby realizing the switch state detection function of the one or more first mechanical switches in the electrical appliance through the way of multiplexing the power supply circuit in the electrical appliance, and effectively reducing the hardware cost of the control device for realizing the switch state detection function.

[0007] According to an embodiment of the present application, the control circuit comprises: a parameter detection circuit, which is connected with the output end of the first power supply circuit and is configured to detect the electrical parameter output by the first power supply circuit; and a first controller, which is connected with the parameter detection circuit and is configured to determine the switch state of the at least one first mechanical switch according to the electrical parameter.

[0008] According to an embodiment of the present application, the control circuit further comprises a second power supply circuit, which is connected with the output end of the first power supply circuit and is configured to convert the electrical parameter output by the first power supply circuit to supply power to the first controller.

[0009] According to an embodiment of the present application, the first controller is further configured to control the electrical appliance according to the switch state of the at least one first mechanical switch.

[0010] According to an embodiment of the present application, the electrical appliance further comprises a main box and a display panel, the first power supply circuit and the parameter adjusting circuit are arranged in the main box, and the control circuit is arranged in the display panel.

[0011] According to an embodiment of the present application, the control circuit is further configured to control the display panel to display the switch state of the at least one first mechanical switch and / or the working state of the electrical appliance determined based on the switch state of the at least one first mechanical switch.

[0012] According to an embodiment of the present application, the first power supply circuit comprises at least one first signal end, the parameter adjusting circuit comprises at least one parameter adjusting sub-circuit, each parameter adjusting sub-circuit is connected with a corresponding first mechanical switch and a corresponding first signal end, wherein each parameter adjusting sub-circuit is configured to detect the switch state of the corresponding first mechanical switch and generate a corresponding first adjusting signal, and the first power supply circuit adjusts the electrical parameter output by itself based on the at least one first adjusting signal.

[0013] According to an embodiment of the present application, each parameter sub-adjusting circuit comprises: a switch detection circuit, an input end of the switch detection circuit being connected with one end of the corresponding first mechanical switch, and the switch detection circuit being configured to detect the switch state of the corresponding first mechanical switch and output a state detection signal; and a signal shaping circuit, an input end of the signal shaping circuit being connected with an output end of the switch detection circuit, and an output end of the signal shaping circuit being connected with the corresponding first signal end, and the signal shaping circuit being configured to perform signal shaping on the state detection signal to obtain the first adjusting signal.

[0014] According to an embodiment of the present application, the first power supply circuit comprises a second signal end, and the parameter adjusting circuit comprises at least one parameter adjusting sub-circuit and a second controller, each parameter adjusting sub-circuit being connected with the corresponding first mechanical switch and the second controller respectively, and the second controller being further connected with the second signal end, wherein each parameter adjusting sub-circuit is configured to detect the switch state of the corresponding first mechanical switch and generate the corresponding first adjusting signal, the second controller generates a second adjusting signal based on the at least one first adjusting signal, and the first power supply circuit adjusts the electrical parameter output by itself based on the second adjusting signal.

[0015] According to an embodiment of the present application, each parameter adjusting sub-circuit comprises: a switch detection circuit, an input end of the switch detection circuit being connected with one end of the corresponding first mechanical switch, and the switch detection circuit being configured to detect the switch state of the corresponding first mechanical switch and output a state detection signal; and a signal shaping circuit, an input end of the signal shaping circuit being connected with an output end of the switch detection circuit, and an output end of the signal shaping circuit being connected with the second controller, and the signal shaping circuit being configured to perform signal shaping on the state detection signal to obtain the first adjusting signal.

[0016] According to an embodiment of the present application, the first power supply circuit comprises an electrical parameter feedback end, and the parameter adjusting circuit comprises at least one parameter adjusting sub-circuit, each parameter adjusting sub-circuit being connected with the corresponding first mechanical switch and the electrical parameter feedback end respectively, wherein each parameter adjusting sub-circuit is configured to detect the switch state of the corresponding first mechanical switch and generate the corresponding first adjusting signal, and the first adjusting signal is configured to adjust the electrical parameter feedback value of the electrical parameter feedback end, so that the first power supply circuit adjusts the electrical parameter output by itself based on the electrical parameter feedback value.

[0017] According to one embodiment of the present application, each parameter adjustment sub-circuit comprises: a switch detection circuit, an input end of the switch detection circuit being connected with one end of the corresponding first mechanical switch, and being configured to detect the switch state of the corresponding first mechanical switch and output a state detection signal; a signal shaping circuit, an input end of the signal shaping circuit being connected with an output end of the switch detection circuit, and being configured to perform signal shaping on the state detection signal to obtain a first adjustment signal; and an adjustment circuit, an input end of the adjustment circuit being connected with an output end of the signal shaping circuit, and an output end of the adjustment circuit being connected with the electric parameter feedback end, and the adjustment circuit being configured to adjust the electric parameter feedback value of the electric parameter feedback end based on the first adjustment signal.

[0018] According to one embodiment of the present application, the other end of each first mechanical switch is connected with the corresponding first power supply, and one end of each first mechanical switch is also connected with the corresponding load, so that the first power supply supplies power to the corresponding load through the first mechanical switch.

[0019] According to one embodiment of the present application, the electric parameter comprises voltage or current.

[0020] According to one embodiment of the present application, the switch detection circuit comprises: a first resistor, one end of the first resistor being connected with one end of the corresponding first mechanical switch; and a second resistor, one end of the second resistor being connected with the other end of the first resistor and the input end of the signal shaping circuit respectively, and the other end of the second resistor being grounded.

[0021] According to one embodiment of the present application, the signal shaping circuit comprises: a first diode, an anode of the first diode being connected with the output end of the switch detection circuit; a first capacitor, the first capacitor being connected between a cathode of the first diode and the ground; and a third resistor, one end of the third resistor being connected with the cathode of the first diode, and the other end of the third resistor being used as the output end of the signal shaping circuit.

[0022] According to one embodiment of the present application, when the feedback circuit is connected at the electric parameter feedback end to generate the electric parameter feedback value based on the resistance voltage division through the feedback circuit, the adjustment circuit comprises: a first controllable switch, a first end of the first controllable switch being connected with the output end of the signal shaping circuit, and a second end of the first controllable switch being grounded; and a fourth resistor, one end of the fourth resistor being connected with a third end of the first controllable switch, and the other end of the fourth resistor being connected with the electric parameter feedback end.

[0023] According to one embodiment of the present application, the feedback circuit comprises: a fifth resistor, one end of the fifth resistor being connected with the sampling end of the electric parameter; and a sixth resistor, one end of the sixth resistor being connected with the other end of the fifth resistor and the electric parameter feedback end respectively, and the other end of the sixth resistor being grounded.

[0024] To achieve the above object, the second embodiment of the present application proposes an electric appliance device comprising the control device of the electric appliance device as described above.

[0025] According to the electrical appliance device of the embodiment of the present application, the control device can reuse the power supply circuit in the electrical appliance device to realize the switch state detection function of the one or more first mechanical switches in the electrical appliance device, and effectively reduce the hardware cost of the electrical appliance device for realizing the switch state detection function.

[0026] Additional aspects and advantages of the present application will be described in the following description, will become apparent from the following description, or will be learned from practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 Fig. 1 is a structural schematic diagram of the control device according to one embodiment of the present application;

[0028] Figure 2 Fig. 2 is a structural schematic diagram of the control circuit according to one embodiment of the present application;

[0029] Figure 3 Fig. 3 is a structural schematic diagram of the parameter adjustment circuit according to one embodiment of the present application;

[0030] Figure 4 Fig. 4 is a structural schematic diagram of the parameter adjustment circuit according to another embodiment of the present application;

[0031] Figure 5 Fig. 5 is a structural schematic diagram of the parameter adjustment circuit according to still another embodiment of the present application;

[0032] Figure 6 Fig. 6 is a circuit diagram of the switch detection circuit according to one embodiment of the present application;

[0033] Figure 7 Fig. 7 is a circuit diagram of the first power supply circuit according to one embodiment of the present application;

[0034] Figure 8 Fig. 8 is a circuit diagram of the adjustment circuit according to one embodiment of the present application;

[0035] Figure 9 Fig. 9 is a structural schematic diagram of the electrical appliance device according to one embodiment of the present application. DETAILED DESCRIPTION

[0036] The embodiments of the present application are described in detail below with reference to the accompanying drawings, in which the same or similar components have the same or similar reference numbers throughout. The embodiments described below are exemplary and are intended to explain the present application, and should not be understood as limiting the present application.

[0037] The electrical appliance device and the control device thereof according to the embodiments of the present application are described below with reference to the accompanying drawings.

[0038] The embodiments of the present application are described in detail below with reference to the accompanying drawings, in which the same or similar components have the same or similar reference numbers throughout. The embodiments described below are exemplary and are intended to explain the present application, and should not be understood as limiting the present application.Figure 1 Fig. 1 is a structural schematic diagram of a control device of an electrical appliance according to an embodiment of the present application, referring to Figure 1 The electrical appliance 100 includes at least one first mechanical switch 110 and a first power supply circuit 120, and the device 200 includes a parameter adjustment circuit 210 and a control circuit 220.

[0039] The parameter adjustment circuit 210 is connected to the at least one first mechanical switch 110 and the first power supply circuit 120 respectively, and is configured to detect the switching state of the at least one first mechanical switch 110 and generate an adjustment signal, so that the first power supply circuit 120 adjusts the electrical parameter output by itself based on the adjustment signal; the control circuit 220 is connected to the first power supply circuit 120, and is configured to determine the switching state of the at least one first mechanical switch 110 according to the electrical parameter.

[0040] Specifically, in the electrical appliance 100, the first mechanical switch 110 can be used to control the power supply state of different modules in the electrical appliance 100. For example, when the electrical appliance 100 is a household appliance such as a bathroom heater, it can have multiple modules such as a fan, a lighting device, and a heating device. At this time, one or more first mechanical switches 110 can be provided in the electrical appliance 100 to manually control the power supply of these functional modules. The first power supply circuit 120 can be used to supply power to part of the modules in the electrical appliance 200. For example, the first power supply circuit 120 can be an AC-DC conversion circuit used to supply DC power to the driving chip of the fan. In actual application, in order to improve user experience, a display module such as a display lamp or a display screen can also be provided in the electrical appliance 200 to enable the user to intuitively observe the power supply state of each module in the electrical appliance 200, which requires detection of the switching state of multiple first mechanical switches 110. In the related art, the detection is usually achieved by using an optocoupler circuit, i.e., the end voltage or current of the first mechanical switch 110 is detected by using an optocoupler element, and electrical isolation is achieved by using the optocoupler element. However, this related technology has the problems of high hardware cost and large size due to the high cost of the optocoupler.

[0041] In the embodiment of the present application, referring to Figure 1As shown, the parameter adjustment circuit 210 in the control device 200 is connected with the at least one first mechanical switch 110 respectively, and the parameter adjustment circuit 100 is also connected with the first power supply circuit 120. In actual work, the parameter adjustment circuit 100 can detect the switch state of the first mechanical switch 110 and generate an adjustment signal to the first power supply circuit 120. Then, the first power supply circuit 120 can adjust the electrical parameter output by itself based on the adjustment signal to the control circuit 220, wherein the electrical parameter can include output voltage, output current, etc. Finally, the control circuit 220 can determine the switch state of the first mechanical switch 110 according to the electrical parameter. Thus, the control device 200 realizes the switch state detection function of the one or more first mechanical switches in the electrical appliance, and the switch state detection function is realized by using the first power supply circuit 120 in the electrical appliance 100, and the first power supply circuit 120 can still output the electrical parameter, so the switch state detection function has little effect on the power supply function of the first power supply circuit 120, and the multiplexing of the first power supply circuit 120 is also realized, thereby reducing the cost of the control device 200 to realize the switch detection function.

[0042] In the above embodiment, the parameter adjustment circuit detects the switch state of the at least one first mechanical switch and generates an adjustment signal, so that the first power supply circuit in the electrical appliance can adjust the electrical parameter output by itself based on the adjustment signal, and then the control circuit determines the switch state of the first mechanical switch according to the electrical parameter, thereby realizing the switch state detection function of the one or more first mechanical switches in the electrical appliance by multiplexing the power supply circuit in the electrical appliance, and effectively reducing the hardware cost of the control device to realize the switch state detection function.

[0043] In some embodiments, with reference to Figure 2 As shown, the control circuit 220 includes a parameter detection circuit 221 and a first controller 222. The parameter detection circuit 221 is connected with the output end of the first power supply circuit 120 and is configured to detect the electrical parameter output by the first power supply circuit 120; the first controller 222 is connected with the parameter detection circuit 221 and is configured to determine the switch state of the at least one first mechanical switch 110 according to the electrical parameter.

[0044] Further, the control circuit 220 includes a second power supply circuit 223 connected with the output end of the first power supply circuit 120 and configured to convert the electrical parameter output by the first power supply circuit 120 to supply power to the first controller 222.

[0045] Further, the first controller 222 is further configured to control the electrical appliance 100 according to the switch state of the at least one first mechanical switch 120.

[0046] Specifically, the parameter detection circuit 221 can be a variety of signal sampling circuit, for example, when the electrical parameter is voltage, the parameter detection circuit 221 can be a voltage dividing circuit to detect the electrical parameter output by the first power supply circuit 120. Meanwhile, in addition to the function of determining the switch state of the at least one first mechanical switch 110 according to the electrical parameter, the first controller 222 can also integrate other control functions of the electrical appliance 100, for example, the first controller 222 can control the electrical appliance 100 according to the switch state of the at least one first mechanical switch 110 to make the corresponding module work normally. In addition, since the electrical parameter output by the first power supply circuit 120 will change according to the switch state of the first mechanical switch 110, it is unable to provide stable direct current power supply for the first controller 222, and the second power supply circuit 223 can also be arranged in the control circuit 220. The second power supply circuit 223 can be a BUCK circuit, an LDO module, etc., which is not limited here. The second power supply circuit 223 can convert the electrical parameter output by the first power supply circuit 120 to supply power to the first controller 222, so that the first controller 222 can reuse the first power supply circuit 120 for power supply, thereby reducing the hardware cost of the control device.

[0047] In the above embodiment, by arranging the parameter detection circuit and the first controller in the control circuit, the control circuit realizes the function of determining the switch state of the at least one first mechanical switch according to the electrical parameter. Meanwhile, by arranging the second power supply circuit in the control circuit, the first controller can directly take power from the first power supply circuit, the reuse of the first power supply circuit is realized, and the hardware cost of the control device is further reduced.

[0048] Further, referring to FIG. 1, Figure 2 As shown in FIG. 1, the electrical appliance 100 further includes a main box 130 and a display panel 140, the first power supply circuit 120 and the parameter adjustment circuit 210 are arranged in the main box 130, and the control circuit 220 is arranged in the display panel 140.

[0049] Specifically, in the related art, in order to detect the switch state of the plurality of first mechanical switches 110, a detection circuit is usually arranged between each first mechanical switch 110 and the corresponding load 400, and the plurality of detection circuits are directly connected with the first controller 222, so that the first controller 222 determines the switch state of the plurality of first mechanical switches 110 according to the detection signals output by the plurality of detection circuits. However, the detection circuit in the related art will occupy a large number of ports of the first controller 222, thereby wasting the communication resources and computing resources of the first controller 222, and making the cost of the switch state detection function of the detection circuit higher. In addition, usually, the detection circuit and the first controller 222 are separately arranged in different parts of the electrical appliance, for example, when the electrical appliance 100 is a refrigerator, the detection circuit and the first controller 222 are usually arranged in the main box and the display panel respectively. Figure 2As shown in the figure, the detection circuit is usually installed in the main box 130, and the first controller 222 is installed in the display panel 140. In this case, the detection circuit in the related art will cause the problem of complex wiring, and further increase the installation difficulty and subsequent maintenance difficulty, which is not conducive to user experience.

[0050] In the embodiment of the application, as shown in the figure, Figure 2 The control device 200 sets the first power supply circuit 110 and the parameter adjustment circuit 210 in the main box 130, and sets the control circuit 220 in the display panel 140, and the control circuit 220 only needs to pass through two lines with the first power supply circuit 110 in the main box 130, one for sampling the electrical parameter output by the first power supply circuit 110, and one for multiplexing the power supply of the first power supply circuit 110 to the first controller 222. In this way, the detection function of the plurality of first mechanical switches 220 can avoid occupying a plurality of ports of the first controller 222, and the wiring in the control device 200 can also avoid being too complex, thereby effectively reducing the hardware cost and installation difficulty of the control device, and improving the convenience of the control device.

[0051] Optionally, the control circuit 220 is further configured to control the display panel 140 to display the switch state of the at least one first mechanical switch 110 and / or the working state of the electrical appliance 100 determined based on the switch state of the at least one first mechanical switch 110, so that the user can intuitively observe the switch state of the first mechanical switch 110 and / or the working state of the electrical appliance 100, thereby improving the convenience of the control device.

[0052] In some embodiments, as shown in the figure, Figure 3 The first power supply circuit 120 includes at least one first signal terminal SN1, and the parameter adjustment circuit 210 includes at least one parameter adjustment sub-circuit 211, each parameter adjustment sub-circuit 211 is connected with a corresponding first mechanical switch 110 and a corresponding first signal terminal SN1, wherein each parameter adjustment sub-circuit 211 is configured to detect the switch state of the corresponding first mechanical switch 110 and generate a corresponding first adjustment signal, and the first power supply circuit 120 adjusts the electrical parameter output by itself based on the at least one first adjustment signal.

[0053] Specifically, the first power supply circuit 120 can be various switching power supply circuits, such as BUCK circuit, forward switching power supply, flyback switching power supply circuit, etc., so as to adjust the output electrical parameter, wherein the electrical parameter can be voltage or current, which is not limited here. Generally, the first power supply circuit 120 can include a driving chip and a driving circuit, the driving circuit includes a switching device, and the driving chip can be used to input a PWM signal for controlling the switching device to the driving circuit, so as to adjust the electrical parameter output by the first power supply circuit 120. In the embodiment of the application, as shown in the figure,Figure 3 As shown, the first power supply circuit 120 can include at least one first signal end SN1 corresponding to each parameter adjustment sub-circuit 211, wherein the at least one first signal end SN1 can be arranged on the driving chip, and each first signal end SN1 is connected to the corresponding parameter adjustment circuit 210. For example, the first signal end SN1 can be an IO serial port on the driving chip. When the first adjustment signal input by the at least one parameter adjustment sub-circuit 211 is input to the driving chip of the first power supply circuit 120, the driving chip can change the PWM signal input to the driving circuit based on the input at least one first adjustment signal, thereby realizing the function of adjusting the electrical parameters of the first power supply circuit based on the adjustment signal.

[0054] Further, referring to Figure 3 As shown, the other end of each first mechanical switch 110 is connected to the corresponding first power supply 300, and one end of each first mechanical switch 110 is also connected to the corresponding load 400, so that the first power supply 300 supplies power to the corresponding load 400 through the first mechanical switch 110.

[0055] Further, each parameter adjustment sub-circuit 211 includes a switch detection circuit 2111 and a signal shaping circuit 2112. The input end of the switch detection circuit 2111 is connected to one end of the corresponding first mechanical switch 110, and is configured to detect the switch state of the corresponding first mechanical switch 110 and output a state detection signal. The input end of the signal shaping circuit 2112 is connected to the output end of the switch detection circuit 2111, and the output end of the signal shaping circuit 2112 is connected to the corresponding first signal end SN1, and is configured to perform signal shaping on the state detection signal to obtain a first adjustment signal.

[0056] Specifically, referring to Figure 3As shown, after the first mechanical switch 110 is closed, the corresponding first power supply 300 is connected to the corresponding load 400, and the switch detection circuit 2111 detects the switching state of the first mechanical switch 110 and outputs a valid state detection signal to the signal shaping circuit 2112, where the state detection signal can be a direct current signal or an alternating current signal, which is determined according to the output of the corresponding first power supply 300. Subsequently, the signal shaping circuit 2112 can perform signal shaping steps such as voltage division, filtering, and voltage stabilization on the state detection signal to obtain a first adjustment signal, and output the first adjustment signal to the first power supply circuit 120 through the corresponding first signal terminal SN1, where the first adjustment signal can be a low-voltage direct current signal. Finally, the first power supply circuit 120 adjusts the electrical parameters output by itself according to the first adjustment signal. At this time, since the electrical parameters output by the first power supply circuit 120 are affected by at least one first adjustment signal, the control circuit 220 can determine the switching state of at least one first mechanical switch 110 by reading the electrical parameters. Thus, the control device realizes the switching state determination function of at least one first mechanical switch.

[0057] In another embodiment, referring to Figure 4 As shown, the first power supply circuit 120 includes a second signal terminal SN2, and the parameter adjustment circuit 210 includes at least one parameter adjustment sub-circuit 211 and a second controller 212, each parameter adjustment sub-circuit 211 is connected to the corresponding first mechanical switch 110 and the second controller 212, and the second controller 212 is also connected to the second signal terminal SN2, where each parameter adjustment sub-circuit 211 is configured to detect the switching state of the corresponding first mechanical switch 110 and generate a corresponding first adjustment signal, the second controller 212 generates a second adjustment signal based on at least one first adjustment signal, and the first power supply circuit 120 adjusts the electrical parameters output by itself based on the second adjustment signal.

[0058] Further, each parameter adjustment sub-circuit 211 includes a switch detection circuit 2111 and a signal shaping circuit 2112, the input end of the switch detection circuit 2111 is connected to one end of the corresponding first mechanical switch 110, and is configured to detect the switching state of the corresponding first mechanical switch 110 and output a state detection signal; the input end of the signal shaping circuit 2112 is connected to the output end of the switch detection circuit 2111, and the output end of the signal shaping circuit 2112 is connected to the second controller 212, which is configured to perform signal shaping on the state detection signal to obtain a first adjustment signal.

[0059] Specifically, referring to Figure 4As shown, a second controller 212 can also be used to collect the first adjustment signals output by each parameter adjustment sub-circuit 211, which are generated in the same way as in the foregoing embodiments and thus will not be described here. The second controller 212 can generate a second adjustment signal based on the at least one first adjustment signal and transmit it to the first power supply circuit 120, so that the first power supply circuit 120 adjusts the electrical parameter output by it based on the second adjustment signal, thereby enabling the control circuit 220 to determine the switching state of the at least one first mechanical switch 110 based on the electrical parameter output by the first power supply circuit 120. Compared with the control device 200 in the foregoing embodiments, the control device 200 in the embodiment of the present application can not only achieve the foregoing function of determining the switching state of the at least one first mechanical switch, but also can reduce the number of ports used by the first power supply circuit 120, thereby reducing the communication cost of the switching detection function.

[0060] In yet some embodiments, with reference to Figure 5 As shown, the first power supply circuit 120 includes an electrical parameter feedback end FK, and the parameter adjustment circuit 210 includes at least one parameter adjustment sub-circuit 211, each of which is connected to the corresponding first mechanical switch 110 and the electrical parameter feedback end FK. Each parameter adjustment sub-circuit 211 is configured to detect the switching state of the corresponding first mechanical switch 110 and generate a corresponding first adjustment signal, which is configured to adjust the electrical parameter feedback value of the electrical parameter feedback end FK, so that the first power supply circuit 120 adjusts the electrical parameter output by it based on the electrical parameter feedback value.

[0061] Specifically, as Figure 5 As shown, the first power supply circuit 120 can also achieve the function of adjusting the electrical parameter output by it based on the at least one first adjustment signal through one electrical parameter feedback end FK, i.e., by receiving multiple first adjustment signals through the electrical parameter feedback end FK to generate a corresponding electrical parameter feedback value, and then adjusting the electrical parameter output by it based on the electrical parameter feedback value. Compared with the control device 200 in the foregoing embodiments, the control device 200 in the embodiment of the present application can not only achieve the foregoing function of determining the switching state of the at least one first mechanical switch 110, but also can reduce the number of ports used by the first power supply circuit 120, and does not need to additionally set the second controller 212, thereby further reducing the communication cost and hardware cost of the switching detection function.

[0062] Furthermore, each parameter adjustment sub-circuit 211 includes: a switch detection circuit 2111, a signal shaping circuit 2112, and an adjustment circuit 2113. The input terminal of the switch detection circuit 2111 is connected to one end of the corresponding first mechanical switch 110, and is configured to detect the switching state of the corresponding first mechanical switch 110 and output a state detection signal. The input terminal of the signal shaping circuit 2112 is connected to the output terminal of the switch detection circuit 2111, and is configured to perform signal shaping on the state detection signal to obtain a first adjustment signal. The input terminal of the adjustment circuit 2113 is connected to the output terminal of the signal shaping circuit 2112, and the output terminal of the adjustment circuit 2113 is connected to the electrical parameter feedback terminal FK, and is configured to adjust the electrical parameter feedback value of the electrical parameter feedback terminal FK based on the first adjustment signal.

[0063] Specifically, refer to Figure 5 As shown, when the first mechanical switch 110 is closed, the corresponding first power supply 300 is connected to the corresponding load 400. The corresponding switch detection circuit 2111 detects the switching state of the first mechanical switch 110 and outputs a valid state detection signal to the signal shaping circuit 2112. Subsequently, the signal shaping circuit 2112 shapes the state detection signal to obtain a first adjustment signal, which is then input to the adjustment circuit 2113. The adjustment circuit 2113 then adjusts the electrical parameter feedback value input to the first power supply circuit 120 based on these first adjustment signals. The first power supply circuit 120 adjusts its own output electrical parameters according to the electrical parameter feedback value, thereby enabling the control circuit 220 to determine the switching state of the first mechanical switches 110 based on the electrical parameters output by the first power supply circuit 120. Thus, the control device realizes the function of determining the switching state of at least one first mechanical switch through the first power supply circuit within the electrical equipment.

[0064] In some embodiments, reference Figure 6 As shown, the switch detection circuit 211 includes a first resistor R1 and a second resistor R2. One end of the first resistor R1 is connected to one end of the corresponding first mechanical switch 110; one end of the second resistor R2 is connected to the other end of the first resistor R1 and the input terminal of the signal shaping circuit 212, and the other end of the second resistor R2 is grounded to GND.

[0065] Furthermore, the signal shaping circuit 212 includes: a first diode D1, a first capacitor C1, and a third resistor R3. The anode of the first diode D1 is connected to the output terminal of the switch detection circuit 211; the first capacitor C1 is connected between the cathode of the first diode D1 and ground GND; one end of the third resistor R3 is connected to the cathode of the first diode D1, and the other end of the third resistor R3 serves as the output terminal of the signal shaping circuit 212.

[0066] Specifically, refer to Figure 6As shown, the first resistor R1 and the second resistor R2 constitute a voltage dividing circuit, mainly used for voltage signal input by the first power supply 300 through the first mechanical switch 110 to obtain the state detection signal. The first diode D1 and the first capacitor C1 are mainly used for filtering, and the third resistor R3 is mainly used for current limiting, so as to process the state detection signal into a stable voltage and a small current DC signal, so as to provide the first power supply circuit 120 or the adjustment circuit 213.

[0067] In some embodiments, referring to Figure 7 and Figure 8 As shown, when the feedback circuit 121 is connected to the electric parameter feedback end FK to generate the electric parameter feedback value based on the voltage division of the resistor, the adjustment circuit 213 includes: a first controllable switch Q1 and a fourth resistor R4. Wherein, the first end of the first controllable switch Q1 is connected to the output end of the signal shaping circuit 212, and the second end of the first controllable switch Q1 is grounded GND; one end of the fourth resistor R4 is connected to the third end of the first controllable switch Q1, and the other end of the fourth resistor R4 is connected to the electric parameter feedback end FK.

[0068] Further, the feedback circuit 121 includes: a fifth resistor R5 and a sixth resistor R6. Wherein, one end of the fifth resistor R5 is connected to the sampling end of the electric parameter; one end of the sixth resistor R6 is connected to the other end of the fifth resistor R5 and the electric parameter feedback end FK respectively, and the other end of the sixth resistor R6 is grounded GND.

[0069] Specifically, when the electric parameter is voltage, referring to Figure 7 As shown, the first power supply circuit 120 can be a constant voltage output flyback switching power supply circuit, and the input power supply of the first power supply circuit 120 can be an alternating current power supply AC. The first power supply circuit 120 can include a feedback circuit 121 and a drive chip 122, wherein the FB pin of the drive chip 122 can be connected to the feedback circuit 121 as the voltage feedback end FK. In the feedback circuit 121, according to the voltage division principle of the fifth resistor R5 and the sixth resistor R6, the voltage feedback value obtained by the FB pin of the drive chip 122 is equal to the voltage division of the output voltage of the first power supply circuit 120 on the sixth resistor R6, so that the drive chip 122 can perform negative feedback adjustment on the output voltage VOUT of the first power supply circuit 120 based on the voltage feedback value, to realize constant voltage output. The specific principle of the flyback switching power supply circuit is not expanded here.

[0070] And in the embodiment of the present application, as Figure 8As shown, when the adjustment circuit 2113 receives the adjustment signal sent by the signal shaping circuit 120, the first controllable switch Q1 is turned on, so that the FB pin of the drive chip 122 is grounded through the fourth resistor R4, the fourth resistor R4 is equivalent to being connected in parallel across the sixth resistor R6, thereby being able to pull down the voltage feedback value on the FB pin, so as to achieve the function of adjusting the output voltage of the first power supply circuit 120. When multiple first mechanical switches 110 are closed, the first controllable switch Q1 in the adjustment circuit 2113 corresponding to the multiple first mechanical switches 110 is closed, thereby connecting multiple fourth resistors R4 in parallel across the sixth resistor R6, thereby being able to further pull down the voltage feedback value on the FB pin and adjust the output voltage of the first power supply circuit 120. In this way, the adjustment circuit realizes the function of adjusting the electric parameter feedback value based on the adjustment signal.

[0071] It should be noted that the electric parameter can also be current, at which time the CS pin of the drive chip 122 can be used as the electric parameter feedback end FK to realize negative feedback adjustment of the output current, and the working principle of the adjustment circuit 2113 is similar to that of the aforementioned adjustment circuit 2113, which is not expanded here; in addition, the first controllable switch Q1 can be a MOS tube, a triode, etc., which is not limited here.

[0072] In summary, according to the control device of the embodiment of the present application, the switching state detection function of one or more first mechanical switches in the electrical appliance is realized by multiplexing the power supply circuit in the electrical appliance through the at least one parameter adjustment circuit detecting the switching state of the corresponding first mechanical switch and generating an adjustment signal to enable the first power supply circuit in the electrical appliance to adjust the electric parameter output based on the adjustment signal, and the control circuit can determine the switching state of the first mechanical switch according to the electric parameter, thereby effectively reducing the hardware cost of the control device to realize the switching state detection function.

[0073] Corresponding to the above-mentioned embodiments, the embodiment of the present application also provides an electrical appliance, which is described with reference to Figure 9 As shown, the electrical appliance 1000 includes the aforementioned control device 200.

[0074] According to the electrical appliance of the embodiment of the present application, the switching state detection function of one or more first mechanical switches in the electrical appliance is realized by multiplexing the power supply circuit in the electrical appliance through the aforementioned control device, thereby effectively reducing the hardware cost of the electrical appliance to realize the switching state detection function.

[0075] It is to be appreciated that the above description and the examples that follow are intended to be illustrative only and that changes can be made to the description, either functionally or chronologically, as well as changes being made concerning the order of implementation. The logic and / or steps represented in the flow diagrams and / or described herein can be considered as a sequence of executable instructions, and can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For purposes of this specification, a "computer-readable medium" can be any apparatus that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. The computer-readable medium can be, for example, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system (or apparatus) or a propagation medium. More specific examples (a non-exhaustive list) of the computer-readable medium include the following: an electrical connection (electronic) having one or more wires, a portable computer diskette (magnetic), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber (optical), and a portable compact disc read-only memory (CDROM). Note that the computer-readable medium can even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, for example, via optical scanning of the paper or other medium, then compiled, interpreted, or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.

[0076] It is to be understood that the various parts of the application can be implemented by hardware, software, firmware or a combination thereof. In the above embodiments, a number of steps or methods can be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any of the following technologies known in the art, or a combination thereof, can be used: discrete logic circuitry having logic gates for implementing logic functions on data signals, application specific integrated circuits having appropriate combinational logic gates, programmable gate arrays (PGA), field programmable gate arrays (FPGA), etc.

[0077] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0078] In addition, the terms "first", "second", etc. are used only for the purpose of description, and should not be understood as indicating or implying relative importance or implying a number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0079] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0080] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A control device for an electric appliance, characterized by comprising: The electric appliance comprises at least one first mechanical switch and a first power supply circuit, and the control device comprises: a parameter adjustment circuit connected with the at least one first mechanical switch and the first power supply circuit respectively, configured to detect the switching state of the at least one first mechanical switch and generate an adjustment signal, so that the first power supply circuit adjusts the electrical parameter output by itself based on the adjustment signal; a control circuit connected with the first power supply circuit, configured to determine the switching state of the at least one first mechanical switch according to the electrical parameter.

2. The control device of an electric appliance according to claim 1, wherein The control circuit comprises: a parameter detection circuit connected with the output end of the first power supply circuit, configured to detect the electrical parameter output by the first power supply circuit; a first controller connected with the parameter detection circuit, configured to determine the switching state of the at least one first mechanical switch according to the electrical parameter.

3. The control device of an electric appliance according to claim 2, wherein The control circuit further comprises: a second power supply circuit connected with the output end of the first power supply circuit, configured to convert the electrical parameter output by the first power supply circuit to supply power to the first controller.

4. The control device of an electric appliance according to claim 2, wherein The first controller is further configured to control the electric appliance according to the switching state of the at least one first mechanical switch.

5. The control device of an electric appliance according to any one of claims 1 to 4, characterized in that, The electric appliance further comprises a main box and a display panel, the first power supply circuit and the parameter adjustment circuit are arranged in the main box, and the control circuit is arranged in the display panel.

6. The control device of an electric appliance according to claim 5, wherein The control circuit is further configured to control the display panel to display the switching state of the at least one first mechanical switch and / or the working state of the electric appliance determined based on the switching state of the at least one first mechanical switch.

7. The control device of an electric appliance according to claim 1, wherein The first power supply circuit comprises at least one first signal end, and the parameter adjustment circuit comprises at least one parameter adjustment sub-circuit, each of which is connected with a corresponding first mechanical switch and a corresponding first signal end, wherein each parameter adjustment sub-circuit is configured to detect the switching state of the corresponding first mechanical switch and generate a corresponding first adjustment signal, and the first power supply circuit adjusts the electrical parameter output by itself based on at least one first adjustment signal.

8. The control device of an electric appliance according to claim 7, wherein Each parameter adjustment sub-circuit comprises: a switching detection circuit, an input end of which is connected with one end of the corresponding first mechanical switch, configured to detect the switching state of the corresponding first mechanical switch and output a state detection signal; a signal shaping circuit, an input end of which is connected with the output end of the switching detection circuit, and an output end of which is connected with the corresponding first signal end, configured to perform signal shaping on the state detection signal to obtain the first adjustment signal.

9. The control device of an electric appliance according to claim 1, wherein The first power supply circuit includes a second signal terminal, and the parameter adjustment circuit includes at least one parameter adjustment sub-circuit and a second controller. Each parameter adjustment sub-circuit is connected to the corresponding first mechanical switch and the second controller, respectively. The second controller is also connected to the second signal terminal. Each parameter adjustment sub-circuit is configured to detect the switching state of the corresponding first mechanical switch and generate a corresponding first adjustment signal. The second controller generates a second adjustment signal based on at least one first adjustment signal. The first power supply circuit adjusts its own output electrical parameters based on the second adjustment signal.

10. The control device of an electric appliance according to claim 9, wherein Each of the parameter adjustment sub-circuits includes: A switch detection circuit, wherein the input terminal of the switch detection circuit is connected to one end of the corresponding first mechanical switch, and is configured to detect the switch state of the corresponding first mechanical switch and output a state detection signal; A signal shaping circuit, wherein the input terminal of the signal shaping circuit is connected to the output terminal of the switch detection circuit, and the output terminal of the signal shaping circuit is connected to the second controller, is configured to perform signal shaping on the state detection signal to obtain the first adjustment signal.

11. The control device of an electric appliance according to claim 1, wherein The first power supply circuit includes an electrical parameter feedback terminal, and the parameter adjustment circuit includes at least one parameter adjustment sub-circuit. Each parameter adjustment sub-circuit is connected to the corresponding first mechanical switch and the electrical parameter feedback terminal, respectively. Each parameter adjustment sub-circuit is configured to detect the switching state of the corresponding first mechanical switch and generate a corresponding first adjustment signal. The first adjustment signal is configured to adjust the electrical parameter feedback value of the electrical parameter feedback terminal, so that the first power supply circuit adjusts its own output electrical parameters based on the electrical parameter feedback value.

12. The control device of an electric appliance according to claim 11, wherein Each of the parameter adjustment sub-circuits includes: A switch detection circuit, wherein the input terminal of the switch detection circuit is connected to one end of the corresponding first mechanical switch, and is configured to detect the switch state of the corresponding first mechanical switch and output a state detection signal; A signal shaping circuit, wherein the input terminal of the signal shaping circuit is connected to the output terminal of the switch detection circuit, is configured to perform signal shaping on the state detection signal to obtain the first adjustment signal; An adjustment circuit is provided, wherein the input terminal of the adjustment circuit is connected to the output terminal of the signal shaping circuit, and the output terminal of the adjustment circuit is connected to the electrical parameter feedback terminal, and is configured to adjust the electrical parameter feedback value of the electrical parameter feedback terminal based on the first adjustment signal.

13. The control device of an electric appliance according to any one of claims 7 to 12, characterized in that, The other end of each of the first mechanical switches is connected to a corresponding first power supply, and one end of each of the first mechanical switches is also connected to a corresponding load, so that the first power supply supplies power to the corresponding load through the first mechanical switch.

14. The control device of an electric appliance according to any one of claims 1 to 4, characterized by The electrical parameters include voltage or current.

15. The control device of an electric appliance according to claim 8, 10 or 12, wherein The switch detection circuit includes: A first resistor, one end of which is connected to one end of the corresponding first mechanical switch; The second resistor has one end connected to the other end of the first resistor and the input terminal of the signal shaping circuit, and the other end of the second resistor is grounded.

16. The control device of an electric appliance according to claim 8, 10 or 12, wherein The signal shaping circuit includes: a first diode, an anode of the first diode being connected with an output end of the switch detection circuit; a first capacitor, the first capacitor being connected between a cathode of the first diode and the ground; a third resistor, one end of the third resistor being connected with the cathode of the first diode, the other end of the third resistor being used as an output end of the signal shaping circuit.

17. The control device of an electric appliance according to claim 12, wherein when the feedback circuit is connected with the electric parameter feedback end to generate the electric parameter feedback value based on resistance voltage division through the feedback circuit, the adjusting circuit comprises: a first controllable switch, a first end of the first controllable switch being connected with the output end of the signal shaping circuit, a second end of the first controllable switch being grounded; a fourth resistor, one end of the fourth resistor being connected with a third end of the first controllable switch, the other end of the fourth resistor being connected with the electric parameter feedback end.

18. The control device of an electric appliance according to claim 17, wherein the feedback circuit comprises: a fifth resistor, one end of the fifth resistor being connected with a sampling end of the electric parameter; a sixth resistor, one end of the sixth resistor being connected with the other end of the fifth resistor and the electric parameter feedback end respectively, the other end of the sixth resistor being grounded.

19. An electrical appliance, characterized in that a control device of an electric appliance comprising the electric appliance according to any one of claims 1-18.

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