A multi-gear toggle switch and its circuit, and a multi-gear identification circuit and device

Abstract

The invention provides a multi-tap-position toggle switch, a circuit of the switch, a multi-tap-position identification circuit and a device. The multi-tap-position toggle switch circuit comprises multiple pins arranged in two columns and multiple sampling resistors in series; one pin of a zeroth tap position is connected to ground; one pin of a first tap position is connected to the ground through one sampling resistor, and connection nodes of the other pin of the first tap position, the pins of a third tap position of the same side as the first tap position and the pins of a second tap position of the side opposite to that of the first tap position are connected with a single chip microcomputer; the other pin of the third tap position is connected to the ground through the two sampling resistors; the pins of a fourth tap position of the opposite side of the pins of the sampling resistors connected with the third tap position are connected to the ground through the three sampling resistors. According to the multi-tap-position toggle switch circuit, application of connection lines and element devices is reduced, the hardware cost is low, the scheme is simple, the cost is reduced, and the problem is solved that in an existing switch circuit, just through a single connection line, multiple tap positions cannot be identified, and a circuit system cannot be aroused.

Description

technical field [0001] The invention relates to the field of multi-gear toggle switches, in particular to a multi-gear toggle switch and its circuit, multi-gear identification circuit and device. Background technique [0002] At present, hand-held blenders and fruit juice machines on the market are basically powered by built-in lithium batteries, which requires that the circuit system of this type of product is in a low power consumption mode when it is not in use, and the circuit system can be powered by external components when it is needed. Wake up and enter the normal working state. In addition, as the needs of consumers continue to change, the function of the blender is not limited to on and off. It is also necessary to distinguish between different levels from the off state to the highest gear. To meet such requirements, the following two implementation schemes are currently commonly used for gear classification: [0003] Such as figure 1 As shown, one solution is to...

AI Technical Summary

Problems solved by technology

[0004] 1. The hardware cost is high, and a single I / O can only recognize one gear, which needs to consume more microcontroller resources to realize the gear recognition, thereby increasing the cost of design materials;

[0005] 2. The current gear cannot be maintained during the shifting process, which may easily trigger misoperation and affect user experience;

[0006] 3. The connection between the switch and the control board requires more cables. On the one hand, the increase in the cables requires a larger PCB board space, which affects the appearance of the product structure; on the other hand, the increase in the connection wires will also lead to material rising costs

[0008] 1. This solution cannot wake up the circuit system, and is not suitable for low standby power consumption products, especially for battery-powered handheld products with strict energy-saving requirements. The application range of this solution is very limited;

[0009] 2. Although it reduces the use of connecting wires, it still needs three core cables to connect

[0010] It can be seen that the existing toggle switch circuits require at least three connecting wires to perform gear recognition, and it is impossible to identify multiple gears through a single connecting wire and take into account the wake-up of the circuit system

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