CN216216827U

CN216216827U - Non-contact detection key system suitable for capacitance

Info

Publication number: CN216216827U
Application number: CN202122642215.1U
Authority: CN
Inventors: 黎瑞连
Original assignee: Youfang Technology Dongguan Co ltd
Current assignee: Youfang Technology Dongguan Co ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-04-05
Anticipated expiration: 2031-10-29

Abstract

The utility model discloses a non-contact detection key system suitable for a capacitive type, which comprises a capacitive touch key, a vertical sensing area, a PCB and a first grounding end, wherein the capacitive touch key is provided with a transverse sensing area or a longitudinal sensing area, the vertical sensing area can be adjusted, the capacitive touch key is arranged on the PCB, the PCB is provided with a singlechip connected with the capacitive touch key, and the first grounding end is connected with the PCB. The induction interval of the capacitive touch key is increased, and compared with the single key for suspension induction, the phenomenon of false triggering or false judgment is reduced; meanwhile, compared with gesture sensing, the probability of misjudgment is reduced, the safety is higher, and the stability is better; and the capacitive touch key can realize the switching of corresponding functions only by waving in the sensing area, namely, the sensing area of the capacitive touch key is increased, and the corresponding non-contact operation can be realized.

Description

Non-contact detection key system suitable for capacitance

Technical Field

The utility model relates to the technical field of switch products, in particular to a non-contact detection key system suitable for capacitance.

Background

The key switch mainly refers to a touch key switch, also called a touch switch. A push switch is an electronic switch, belongs to the class of electronic components, and has been first found in japan [ called: sensitive switch, when it is used, the switch can be closed and switched on by applying pressure to switch operation direction under the condition of meeting operation force, and when the pressure is removed, the switch can be switched off, and its internal structure is switched on and off by means of stress change of metal spring sheet.

Because of epidemic situations, the contact type key is not particularly safe, the operation is not very convenient, and the defect can be perfectly overcome by a suspension or gesture scheme. Thereby better protecting the safety and health of the user. Generally, capacitive touch requires close proximity (under a few mm to sense a finger) or touching a key to identify the key.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a non-contact detection key system suitable for capacitance, which aims to avoid direct contact, does not need to be operated directly by hands, and is more convenient and simpler to operate; compared with independent key suspension induction, the problem of false triggering or false judgment can be better avoided. The gesture scheme can greatly reduce the misjudgment probability.

In order to achieve the above object, the present invention provides a non-contact detection key system suitable for capacitive type, comprising:

the capacitive touch key is provided with a transverse sensing area or a longitudinal sensing area;

a vertical sensing area, wherein the vertical sensing area is adjustable;

the capacitive touch key is arranged on the PCB, and the PCB is provided with a singlechip connected with the capacitive touch key;

and the first grounding end is connected with the PCB.

Preferably, the capacitive touch key is provided with a second ground terminal.

Preferably, the area of the second ground is smaller than that of the first ground.

Preferably, a distance is arranged between the PAD area and the second grounding end, and the distance is greater than 20 mil.

Preferably, a grounding end is not arranged on one side of the PCB, which is far away from the capacitive touch key.

Preferably, no electronic element is arranged on one side of the PCB, which is far away from the capacitive touch key.

According to the technical scheme, the transverse sensing area or the longitudinal sensing area or the vertical sensing area of the capacitive touch key is increased, so that the phenomenon of false triggering or false judgment is reduced compared with the phenomenon of single key suspension sensing; meanwhile, compared with gesture sensing, the probability of misjudgment is reduced, the safety is higher, and the stability is better; the capacitive touch key can realize the switching of corresponding functions only by waving in the sensing area, namely, the sensing area of the capacitive touch key is increased, and the corresponding non-contact operation can be realized; simultaneously, the area of the first grounding end of the PCB is increased, so that better anti-interference effect can be achieved, and the realization is simple. In actual operation, only the palm swings from left to right or in opposite directions (such as longitudinal and transverse directions) on the capacitive touch key, the program stored in the single chip microcomputer recognizes that the palm swings on the key (wherein the program stored in the single chip microcomputer can refer to the prior art), and thus the control end is started.

Drawings

FIG. 1 is a schematic view of the present invention.

In the figure, 1 is a capacitive touch key, 2 is a PAD area, 3 is a PCB, 4 is a first ground terminal, 5 is a second ground terminal, and 6 is a single chip microcomputer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that if directional indications (such as … …, which is up, down, left, right, front, back, top, bottom, inner, outer, vertical, transverse, longitudinal, counterclockwise, clockwise, circumferential, radial, axial) are provided in the embodiments of the present invention, the directional indications are only used for explaining the relative position relationship, motion condition, etc. of the components at a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first" or "second", etc. in the embodiments of the present invention, the description of "first" or "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 1, a non-contact detection key system suitable for capacitance type includes:

the capacitive touch key comprises a capacitive touch key 1, wherein the capacitive touch key 1 is provided with a transverse induction area or a longitudinal induction area;

a vertical sensing area, wherein the vertical sensing area is adjustable;

the PCB 3 is provided with the capacitive touch key 1, and the PCB 3 is provided with a singlechip 6 connected with the capacitive touch key 1;

and the first grounding end 4 is connected with the PCB 3.

By increasing the transverse sensing area or the longitudinal sensing area or the vertical sensing area of the capacitive touch key 1, compared with the single key for suspension sensing, the phenomenon of false triggering or false judgment is reduced; meanwhile, compared with gesture sensing, the probability of misjudgment is reduced, the safety is higher, and the stability is better; the capacitive touch key 1 can realize the switching of corresponding functions only by waving in the sensing area, namely, the sensing area of the capacitive touch key 1 is increased, and the corresponding non-contact operation can be realized; meanwhile, the area of the first grounding end 4 of the PCB 3 is increased, so that better anti-interference effect can be achieved, and the realization is simple. In actual operation, only the palm swings from left to right or in opposite directions (such as longitudinal and transverse directions) on the capacitive touch key 1, the program stored in the single chip microcomputer 6 recognizes that the palm swings on the key (wherein the program stored in the single chip microcomputer 6 can refer to the prior art), and thus the control terminal is started.

In the embodiment of the utility model, the PAD areas on the board with two large keys (the waving area and the left and right keys respectively) are as large as possible, and the stability of induction is improved by improving the touch area.

In the embodiment of the present invention, the capacitive touch key 1 is provided with a second ground terminal 5 to reduce abnormal operations.

In the embodiment of the present invention, the area of the second ground terminal 5 is smaller than the area of the first ground terminal 4.

In the embodiment of the present invention, a distance is provided between the PAD area 2 and the second ground terminal 5, and the distance is greater than 20 mils, so that the stability of the key can be increased.

In the embodiment of the present invention, a grounding terminal is not disposed on a side of the PCB 3 away from the capacitive touch key 1. The suspension induction gesture of the capacitive touch key 1 can reach a better state, and interference and accuracy are reduced.

In the embodiment of the present invention, no electronic component is disposed on a side of the PCB 3 away from the capacitive touch key 1. The suspension induction gesture of the capacitive touch key 1 can reach a better state, and interference and accuracy are reduced.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the technical solutions of the present invention, which are made by using the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A non-contact detection key system adapted to be capacitive, comprising:

a vertical sensing area, wherein the vertical sensing area is adjustable;

and the first grounding end is connected with the PCB.

2. The system of claim 1, wherein: the capacitance type touch key is provided with a second grounding end.

3. The system of claim 2, wherein: the area of the second grounding terminal is smaller than that of the first grounding terminal.

4. The system of claim 2, wherein: the capacitance type touch key is provided with a PAD area, a distance is arranged between the PAD area and the second grounding end, and the distance is larger than 20 mil.

5. The system of claim 1, wherein: and a grounding end is not arranged on one side of the PCB, which is far away from the capacitive touch key.

6. The system of claim 1, wherein: and no electronic element is arranged on one side of the PCB, which is far away from the capacitive touch key.