TWI664526B - Standby start circuit - Google Patents

Abstract

A standby startup circuit includes a touch module generating a touch signal, a standby power module providing a standby power, a control module, a first switch module and a second switch module. The switch module is connected to the touch module, the standby power module, and the control module, and the second switch module is connected to the control module and a main power. The touch signal triggers the first switch module, so that the standby power module The standby power provided is supplied to the control module, and the standby power is obtained from the control module, and the second switch module is controlled to operate so that the main power is supplied to the control module.

Description

Standby start circuit

The invention relates to a standby startup circuit, in particular to a standby startup circuit of a full-touch washing machine.

Referring to FIG. 1, a control circuit 900 used in a current washing machine. According to the current technology, the power source of the touch panel 901 and the display panel 902 comes from the AC-DC converter 903. However, in the no-power mode, the AC-DC conversion 903 does not work (because the mechanical switch 904 and the relay 906 are open). If the washing machine is switched from the non-power mode to the working mode, the user needs to manually press the mechanical switch 904 to enable the AC / DC converter. 903 obtains power and then wakes up the central controller 905. At this time, the central controller 905 controls the operation of the relay 906 to continuously obtain power and enter the working mode.

However, the current design of the control circuit 900 not only in the no-power mode, the touchpad 901 and the display board 902 will be completely powered off and fail, resulting in various functions on the touchpad 901 being unavailable, and the wake-up mechanism needs to press the mechanical type The switch 904 can be completed and cannot achieve the effect of full touch operation.

Therefore, an object of the present invention is to provide a standby startup circuit capable of full touch operation.

Therefore, the standby startup circuit of the present invention includes a touch module generating a touch signal, a standby power module providing a standby power, a control module, a first switch module and a second switch module The first switch module is connected to the touch module, the standby power module, and the control module, and the second switch module is connected to the control module and a main power, and the first switch module is triggered by the touch signal to make the standby power module The standby power provided by the group is supplied to the control module, and the standby power is obtained from the control module, and the second switch module is controlled to operate so that the main power is supplied to the control module.

In one embodiment, the first switch module is a first relay. The first switch module includes a first terminal connected to the standby power module, a second terminal connected to the control module, and a touch controller. Control terminal of the module.

In one embodiment, the second switch module is a second relay. The second switch module includes a first terminal connected to the main power, a second terminal connected to the second terminal of the first switch module, and A control terminal connected to the control module.

In one embodiment, the control module includes a voltage conversion unit, a control unit connected to the voltage conversion unit, and a monitoring unit connected to the control unit. The voltage conversion unit is connected to the first switch module and the second switch module. Control signal triggers first open Turn off the module so that the standby power provided by the standby power module is supplied to the voltage conversion unit. After the voltage conversion unit performs voltage conversion, it supplies power to the control unit, so that the control unit controls the operation of the second switch module and the main power is supplied to the control. Module. Further, the monitoring unit is a Watch Dog circuit, which is used to monitor the control unit to prevent runaway.

In one embodiment, the standby starting circuit further includes an electrical component set, the electrical component set includes a first water supply valve unit, a second water supply valve unit, and a drain valve unit, and one end of the first water supply valve unit is connected The other end of the first switch module is connected to a ground wire, one end of the second water supply valve unit is connected to the first switch module, the other end is connected to the ground wire, one end of the drain valve unit is connected to the first switch module, and the other end is connected to the Ground.

In one embodiment, the standby power is 5 volts and the power consumption is 0.3 watts.

The effect of the present invention lies in that the design of two sets of relays can be used to mimic the traditional manual mechanical switch by touch to achieve the operation effect of full-plane touch.

100‧‧‧Standby start circuit

10‧‧‧Touch Module

20‧‧‧Standby Power Module

30‧‧‧Control Module

31‧‧‧Voltage Conversion Unit

32‧‧‧control unit

33‧‧‧Monitoring Unit

40‧‧‧The first switch module

50‧‧‧Second switch module

60‧‧‧ Denso Parts Group

61‧‧‧First water supply valve unit

62‧‧‧Second water supply valve unit

63‧‧‧Drain valve unit

N11‧‧‧ the first end of the first switch module

N12‧‧‧ the second end of the first switch module

Control terminal of NC1‧‧‧first switch module

N21‧‧‧ the first end of the second switch module

N22‧‧‧ the second end of the second switch module

Control terminal of NC2‧‧‧second switch module

901‧‧‧Touchpad

902‧‧‧ display board

903‧‧‧AC-DC converter

904‧‧‧Press mechanical switch

905‧‧‧central controller

906‧‧‧ Relay

Other features and effects of the present invention will be clearly presented in the embodiment with reference to the drawings, wherein: FIG. 1 is a circuit diagram of a control circuit of a current washing machine; and FIG. 2 is a circuit diagram of an embodiment of the standby start circuit of the present invention.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are represented by the same numbers.

Referring to FIG. 2, an embodiment of the standby start circuit 100 according to the present invention. The standby start circuit 100 can be applied to electrical appliances such as refrigerators, air conditioners, washing machines, dehumidifiers, and fans, so that these electrical appliances have low power consumption Operation in standby mode and full touch start operation.

In this embodiment, the standby startup circuit 100 is applied to a touch-type washing machine, which includes a touch module 10, a standby power module 20, a control module 30, a first switch module 40, and a第二 开关 模 50。 The second switch module 50.

The touch module 10 is a touch pad, which has a plurality of touch keys that control the operation of the washing machine, and a touch key (such as an on-off key) is touched to generate a touch key. Touch signal.

The standby power module 20 is a standby power supply for providing standby power. The standby power in this embodiment is 5V (volts), and the standby power consumption is 0.3W (watts) in compliance with safety regulations (<1W). , But not limited to this, its power can be adjusted to suit different product applications. In addition, in practice, the standby power module 20 can receive power and keep outputting the standby power, or it is a battery module that can output the standby power. There are also no restrictions on the selection and production of circuits.

The control module 30 includes a voltage conversion unit 31, a control unit 32 connected to the voltage conversion unit 31, and a monitoring unit 33 connected to the control unit 32. In this embodiment, the voltage conversion unit 31 is an AC to DC (AC to DC) voltage converter, which is connected to the first switch module 40 and the second switch module 50 to perform AC / DC conversion on the received power. . The control unit 32 is a central processing unit (CPU) or a microprocessor, and is used to control the overall operation of the washing machine in cooperation with the operation of the touch module 10. The monitoring unit 33 is a watch dog circuit, which is used to control the second switch module 50 to maintain operation for a long time, and also monitors the control unit 32 to prevent runaway.

The first switch module 40 is a first relay circuit, which includes a first terminal N11 connected to the standby power module 20, a second terminal N12 connected to the voltage conversion unit 31, and a touch module 10. Control terminal NC1.

The second switch module 50 is a second relay circuit, which includes a first terminal N21 connected to a main power and a first terminal N11 of the first switch module 40, and a first switch module 40 connected to the first switch N40. The second terminal N22 of the second terminal N12 and a control terminal NC2 connected to the monitoring unit 33, in other words, the first switch module 40 is connected in parallel to the second switch module 50. The main power includes a live line L (Line) and a ground line N (Nature), and the first end N21 of the second switch module 50 is connected to the main line L (Line), and the ground line N (Nature) is connected to The voltage conversion unit 31 of the standby power module 20 and the control module 30.

In the standby mode, the standby power module 20 will continuously supply 5V standby power to the touch module 10, so that the touch module 10 can detect standby. When a user wants to start a washing machine and operates a touch key (such as an on-off key) of the touch module 10, the touch module 10 is triggered to generate a touch signal, and drives the first switch module 40 to turn off and conduct electricity. The first terminal N11 and the second terminal N12 are used to simulate the short-circuit conduction action of the manual pressing switch. It is added that the touch signal in this embodiment is a high-level pulse signal and the high-level time is about 1S (second), but it is not limited to this, as long as the high-level time is greater than the control unit 32 may control the operation of the second switch module 50 instead of the on time of the first switch module 40.

After the first switch module 40 is turned off (on), the standby power is supplied to the voltage conversion unit 31 through the first switch module 40. After the voltage conversion unit 31 performs AC-DC conversion of the power, the control unit 32 is awakened (driven). And power supply the control unit 32, the control unit 32 then controls the second switch module 50 to turn off to turn on the first end N21 and the second end N22, so that the main power can provide the power required by the control module 30 to operate the control module The group 30 is turned into the working mode, that is, after the control unit 32 wakes up, it will control the operation of the second switch module 50 instead of the first switch module 40.

Therefore, in accordance with the operation of the touch washing machine, the standby power module 20 is used to maintain a low standby power requirement, and the design of the first switch module 40 and the second switch module 50 can mimic the traditional manual pressing mechanical type. The switch uses the electronic touch detection with standby power to achieve the operation effect of full-plane touch.

In addition, the standby start circuit 100 of this embodiment further includes an electrical component group 60 connected to the standby power module 20 and the second end N22 of the second switch module 50. The electrical component group 60 includes a first water supply valve. The unit 61, a second water supply valve unit 62, and a drain valve unit 63 are arranged in parallel, that is, one end of the three is connected to the second end N12 of the first switch module 40, and the other of the three is One end is connected to the ground wire N (Nature). The first water supply valve unit 61 and the second water supply valve unit 62 are used to control the water inlet and the water stop of the washing machine, and to protect the electrical components during shutdown. The drain valve unit 63 is a clutch of a traction machine (Gear Motor). The clutch of the traction motor performs the drainage function, and is isolated from the external power failure when the protection is turned off. The first water supply valve unit 61, the second water supply valve unit 62, and the drainage valve unit 63 in this embodiment may be a single electrical component, or a circuit including an electrical component and a circuit breaker (SW), so that the shutdown can be achieved. In the state, the outer double (the first switch module 40 and the second switch module 50 are another set of circuit breakers) is insulated and isolated from electric shock.

In summary, the standby startup circuit 100 of the present invention uses a standby power source to maintain a low standby power requirement. In addition to the design of two sets of relays, it can use touch to mimic a traditional manual push mechanical switch to achieve a full plane. The touch operation effect can indeed achieve the purpose of the present invention.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited in this way, any simple equivalent changes and modifications made in accordance with the scope of the patent application and the content of the patent specification of the present invention are still The scope of the invention patent Within.

Claims (7)

A standby startup circuit includes: a touch module; a standby power module providing standby power to the touch module; a control module; a first switch module directly connected to the touch module, The standby power module and the control module; and a second switch module, which is directly connected to the control module and is suitable for connecting a main power; wherein, when a touch key of the touch module is used During the operation of the operator, the touch module generates a touch signal and controls the first switch module to be turned on by the touch signal, so that the standby power module provides the standby power to the control module, and enables The control module is awakened. When the control module is awakened, the control module controls the second switch module to be turned on to obtain the power provided by the main power through the second switch module, and switches according to the power provided by the main power. For a working mode. The standby start circuit according to claim 1, wherein the first switch module is a first relay, and the first switch module includes a first terminal connected to the standby power module and a control module A second terminal and a control terminal connected to the touch module. The standby start-up circuit according to claim 2, wherein the second switch module is a second relay, and the second switch module includes a first relay connected to the main power and the first end of the first switch module. One end, a second end connected to the second end of the first switch module, and a control end connected to the control module. The standby start circuit according to claim 1, wherein the control module includes a voltage conversion unit, a control unit connected to the voltage conversion unit, and a monitoring unit connected to the control unit, and the voltage conversion unit is connected to the first The switch module and the second switch module trigger the first switch module on the touch signal, so that the standby power provided by the standby power module is supplied to the voltage conversion unit, and the voltage conversion unit performs voltage conversion After that, power is supplied to the control unit, so that the control unit controls the operation of the second switch module so that the main power is supplied to the control module. The standby start circuit according to claim 4, wherein the monitoring unit is a watch dog circuit for monitoring the control unit to prevent runaway. The standby starting circuit according to claim 1, further comprising an electrical component set including a first water supply valve unit, a second water supply valve unit, and a drain valve unit, the first water supply valve unit One end of the second water supply valve unit is connected to the first switch module, the other end is connected to the ground line, and one end of the drain valve unit is connected to the first The other end of the switch module is connected to the ground wire. The standby start circuit according to claim 1, wherein the standby power is 5 volts and the power consumption is 0.3 watts.