Touch switching circuit

Abstract

The invention discloses a touch switching circuit. The touch switching circuit comprises a processor unit, a main power supply, a touch screen, a touch signal detection unit, an enabling unit and a switching signal generation unit. In a standby state, when the touch screen is touched, the touch signal detection unit can monitor a touch action and generate an enabling signal according to the touch action; after the generated enabling signal enters the enabling unit, the enabling unit can generate a control signal accordingly and convey the control signal to the switching signal generation unit to generate a switching signal by the switching signal generation unit; and the main power supply is controlled to be switched on through the generated switching signal, and the processor unit is powered on to work in order to start equipment. When the touch signal detection unit is in the standby state, only the touch signal detection unit, the enabling unit and the switching signal generation unit need to be kept in live states. In the standby state, the electric energy consumption is extremely low, and booting operation is simple and convenient.

Description

technical field [0001] The invention relates to a switch circuit, in particular to a switch circuit based on touch screen technology. Background technique [0002] In an environment where touch screen technology is increasingly developed, tablet computers, industrial control terminals and other computer-interactive devices all have touch screen designs in their settings. When the user does not need to use the system, the machine will generally be in the state of normal power on, hibernation or power off. In the first normal power-on state, the aging of the machine will be very obvious and the power consumption will be extremely high, which is the worst standby state. The second type of sleep is that core components such as CPU and DDR are in a low-power sleep state, the main power circuit is normally connected, and other circuits are disconnected. When the touch screen is clicked and pressed, the generated interrupt signal will wake up the CPU, and the system will resume ...

AI Technical Summary

Problems solved by technology

This standby mode is relatively power-saving, but the core components such as CPU and DDR are still in the power-on state, there is a certain power loss, and it also has a considerable impact on device aging.

[0003] The third is the shutdown state, but this method needs to add a power button in the design, and the design needs to consider appearance, structural layout, and PCB design, which increases the design complexity to a certain extent

Some devices do not want to add a button to the hole due to the appearance, so this solution will not be applicable

On the other hand, the position of the switch button may not be obvious, and it is easy to confuse when there are many buttons, and the user will spend a lot of time looking for the corresponding power button

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