CN219066124U

CN219066124U - Device for detecting multipoint height difference of touch screen

Info

Publication number: CN219066124U
Application number: CN202320052969.8U
Authority: CN
Inventors: 卢海兵
Original assignee: Suzhou Chipswork Electronic Technology Co ltd
Current assignee: Suzhou Chipswork Electronic Technology Co ltd
Priority date: 2023-01-09
Filing date: 2023-01-09
Publication date: 2023-05-23
Anticipated expiration: 2033-01-09

Abstract

The utility model relates to a device for detecting multipoint height differences of a touch screen, which comprises a product to be detected, a reference bearing platform and a touch detection unit, wherein the reference bearing platform is positioned at the lower position of the product to be detected; the power input is processed by the power processing unit and then is supplied to the touch detection chip unit, the plurality of metal probes are respectively connected to the touch detection chip unit, and the touch detection chip unit outputs the acquired signals through the first I/O interface. According to the device for detecting the multipoint height difference of the touch screen, disclosed by the utility model, an operator timely obtains a detection feedback result, and the yield and the production efficiency of test tube control are greatly improved.

Description

Device for detecting multipoint height difference of touch screen

Technical Field

The utility model relates to the technical field of capacitive touch detection, in particular to a device for detecting multipoint height differences of a touch screen, and specifically relates to a device for detecting multipoint height differences of a touch screen based on a capacitive detection principle.

Background

The device for detecting the multipoint height difference of the touch screen is applicable to, but not limited to, touch screens and display screens, or protective cover plates and display screens, and is used for fully attaching products by liquid optical cement.

In order to meet the special use environment and weather resistance requirements of some products, so as to meet the requirements of water resistance, dust resistance, ash resistance, yellowing resistance, temperature resistance and the like, the display screen is generally wrapped by an upper iron frame and a lower iron frame due to the special requirements of the products, and is required to be bonded by using liquid optical cement due to the reasons of structure and strength, and the thickness consistency and uniformity of each to-be-measured point of the products are difficult to ensure due to the good flowability of the liquid optical cement. For products with thickness or height difference and flatness at different positions of the product laminating adhesive layer to be controlled, whether the product laminating thickness and flatness meet the structural installation and appearance requirements of the whole machine can be judged conveniently and rapidly in production.

Conventional detection tools or instruments for measuring the thickness and the height difference of products mainly comprise vernier calipers, micrometer, altimeter or laser thickness meter or ultrasonic thickness meter, etc., but for some products, these instruments may not be necessarily suitable. For example, a vernier caliper or a micrometer is easy to scratch the surface of a product, and is not suitable for simultaneously controlling the thickness and the flatness of multiple points. The laser thickness gauge, the ultrasonic thickness gauge and the like can penetrate or reflect light when a product to be measured meets the surface of glass, and if the thickness, the height difference, the flatness and the like of multiple points are required to be controlled, the cost of selecting the special instrument is extremely high, the customization is very complex, and for products with small production batch, the scheme has extremely high cost and less ideal feasibility and is difficult to be adopted.

The prior art generally needs to input a large amount of manpower to carry out repeated mechanical measurement work, is easy to be bored by personnel, is not concentrated in spirit, causes potential safety hazard or omission, and has the problems of high working strength, poor production process stability, poor production efficiency, low yield and the like.

Based on the requirement that the product to be detected needs to detect the multipoint thickness or the height difference and flatness of the product at the same time, a system or device with independent detection and judgment is difficult to find in the market at present, and the repeated mechanical detection work for detecting the multipoint height difference of the product at the same time can be truly and effectively replaced by a large number of manpower.

In view of the above-mentioned drawbacks, the present inventors have actively studied and innovated to create a device for detecting a multi-point height difference of a touch screen, so as to have industrial utility value.

Disclosure of Invention

In order to solve the technical problems, the utility model aims to provide a device for detecting the multipoint height difference of a touch screen.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the device for detecting the multipoint height difference of the touch screen comprises a product to be detected, a reference bearing platform and a touch detection unit, wherein the reference bearing platform is positioned at the lower position of the product to be detected, and the touch detection unit is positioned at the upper or lower position of the product to be detected; the touch detection unit is provided with a plurality of metal probes, the touch detection unit is internally provided with a touch detection control module, the touch detection control module comprises a power supply processing unit and a touch detection chip unit, power is supplied to the touch detection chip unit after being processed by the power supply processing unit, the plurality of metal probes are respectively connected to the touch detection chip unit, and the touch detection chip unit outputs collected signals through a first I/O interface.

As a further improvement of the utility model, the product to be tested sequentially comprises an upper metal frame and a lower metal frame from top to bottom, and the upper metal frame and the lower metal frame are bonded together through liquid optical cement; the overall size of the upper metal frame is larger than that of the lower metal frame, and the touch detection unit is positioned above the product to be detected.

As a further improvement of the utility model, the product to be tested sequentially comprises an upper metal frame and a lower metal frame from top to bottom, and the upper metal frame and the lower metal frame are bonded together through liquid optical cement; the overall size of the upper metal frame is smaller than that of the lower metal frame, and the touch detection unit is positioned below the product to be detected.

As a further improvement of the utility model, the touch detection control module also comprises a capacitive sensor, and a plurality of metal probes are respectively connected to the touch detection chip unit through the capacitive sensors of the multiple channels.

As a further improvement of the utility model, the touch detection control module further comprises an MCU controller, the MCU controller is in communication connection with the touch detection chip unit through an I2C interface, and signals acquired by the touch detection chip unit are processed by the MCU controller and output through a second I/O interface.

As a further improvement of the utility model, the MCU controller reserves a burning interface and a debugging interface.

As a further improvement of the utility model, the utility model also comprises an acousto-optic feedback device, and the MCU controller is connected with the acousto-optic feedback device through a second I/O interface.

As a further improvement of the utility model, the touch detection chip unit further comprises an acousto-optic feedback device, and the touch detection chip unit is connected with the acousto-optic feedback device through a first I/O interface.

By means of the scheme, the utility model has at least the following advantages:

according to the characteristics of a large-top-small structure or a large-top-small-large-top-large-size structure of a product to be detected, different types of detection structure devices are matched and selected, the product to be detected is placed on a supporting reference bearing platform, and then a metal probe of a touch detection unit is contacted with a display screen metal iron frame of the product to be detected from the front or the back. And then according to the touch detection control module, the collected original data is sent to the touch detection chip unit for judging and processing, and then the processing result is sent to the MCU controller 50 for processing from the first I/O interface output port of the MCU controller 50, and then an auxiliary acousto-optic and electric feedback device is connected to judge whether the detection is qualified or not according to the feedback result. And setting the output as green light according to the qualified detection result, and setting the output as red light and assisting in alarming if the unqualified detection result is detected, so that an operator can timely obtain a detection feedback result, and the yield and the production efficiency of test tube control are greatly improved.

The foregoing description is only an overview of the present utility model, and is intended to provide a better understanding of the present utility model, as it is embodied in the following description, with reference to the preferred embodiments of the present utility model and the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a first embodiment of the present utility model;

FIG. 2 is a schematic diagram of the structure of the product to be tested in FIG. 1;

FIG. 3 is a schematic view of a second embodiment of the present utility model;

FIG. 4 is a schematic diagram of the structure of the product to be tested in FIG. 3;

fig. 5 is a schematic structural view of the touch detection control module of the present utility model.

In the drawings, the meaning of each reference numeral is as follows.

1 to-be-tested product 2 reference bearing platform

3 Metal frame on touch detection Unit 101

102 lower metal frame 103 optical cement

20 touch detection control module 21 power supply processing unit

22 touch detection chip unit 23 capacitive sensor

30 acousto-optic feedback device 50 MCU controller

51 burn interface 52 debug interface

Detailed Description

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

In order to make the present utility model better understood by those skilled in the art, the following description will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.

Examples

With the growing maturity and rapid development of capacitive touch principles and technologies, capacitive touch screens and capacitive touch keys are widely applied to various fields such as electronic products, intelligent products, household electrical appliances, industrial control, vehicle-mounted and the like.

The principle and technology of capacitive touch detection can be utilized for expansibility application.

As shown in figures 1 to 5 of the drawings,

the device for detecting the multipoint height difference of the touch screen comprises a product 1 to be detected, a reference bearing platform 2 and a touch detection unit 3, wherein the reference bearing platform 2 is positioned at the lower position of the product 1 to be detected, and the touch detection unit 3 is positioned at the upper or lower position of the product 1 to be detected; the touch detection unit 3 is provided with a plurality of metal probes, the touch detection unit 3 is internally provided with a touch detection control module 20, the touch detection control module 20 comprises a power supply processing unit 21 and a touch detection chip unit 22, power is supplied to the touch detection chip unit 22 after being processed by the power supply processing unit 21, the plurality of metal probes are respectively connected to the touch detection chip unit 22, and the touch detection chip unit 22 outputs collected signals through a first I/O interface. The touch detection chip unit 22 is connected with the acousto-optic feedback device 30 through a first I/O interface.

The supported reference bearing platform 2 is generally made of materials with better flatness, not limited to bakelite, glass fiber board or marble, and the like, and can be processed into solid or hollow structures, and the supported reference bearing platform 2 is generally placed below the product 1 to be tested. Because the flatness of the product to be tested 101 is relatively high and is not easy to deform, and the back of the product to be tested 102 is generally provided with a circuit board or other structures, because the components are relatively many and the structure is relatively complex, the product to be tested 101 is generally directly contacted with the supported reference bearing platform.

The touch detection unit 3 is placed above or below the product to be detected according to the structure type of the product to be detected 1. When the product 1 to be detected is of a big-end-up structure, the touch detection unit 3 is placed above the product 1 to be detected; when the product 1 to be measured is of a top-down large structure, the touch detection unit 3 is placed below the product 1 to be measured. The touch detection unit 3 may be arranged in a plurality (more than 1) according to the positions to be detected, and a metal probe or probe having a certain elasticity and a certain contact area is contacted with the metal iron frame of the product to be detected 102. The touch detection unit may control up and down movement using a rail type fixing bracket.

The above-described touch detection unit 3 only illustrates the operation principle of its structural part.

The touch detection unit 3 further includes a specific touch detection control module 20 and an auxiliary feedback device 30 such as an acousto-optic device. The touch detection control module 20 mainly includes: after the input power is processed by the power processing unit 21, power is supplied to the capacitive touch detection chip unit 22, a capacitive sensor 23 with multi-channel capacitive detection capability is connected, the part can be omitted when the requirement is not high, a metal detection probe is directly connected to the capacitive detection chip, and if the touch detection chip is provided with a first I/O interface, whether detection is qualified or not can be judged through the feedback result of a feedback device 30 such as an acousto-optic and electric feedback device which is connected with the aid of the first I/O interface.

If the touch detection control module 20 has no operable I/O port, or needs to be linked with a computer or other control device, the MCU controller 50 needs to be added for communication control.

The MCU controller 50 needs to connect and communicate with the touch detection chip unit 22 through an I2C or other interfaces, and reserves a burning interface 51 and a debugging interface 52, and after the result collected by the touch detection unit is processed by the MCU controller 50 through the capacitance detection chip, the result fed back by the feedback device 30 such as an auxiliary acousto-optic and electric device is connected through a second I/O interface to determine whether the detection is qualified.

The touch detection control module 20 further includes a capacitive sensor 23, and a plurality of metal probes are respectively connected to the touch detection chip unit 22 through the capacitive sensors 23 of multiple channels. The touch detection control module 20 further includes an MCU controller 50, where the MCU controller 50 is communicatively connected to the touch detection chip unit 22 through an I2C interface, and signals collected by the touch detection chip unit 22 are processed by the MCU controller 50 and output through a second I/O interface. The MCU controller 50 reserves a burning interface 51 and a debug interface 52. The MCU controller 50 is connected with the acousto-optic feedback device 30 through a second I/O interface.

As shown in fig. 1 and 2, a first embodiment of the present utility model: the product 1 to be tested is of a structure type with a large top and a small bottom, and the upper metal frame 101 of the product 1 is generally placed on the supported reference bearing platform 2 during detection.

The product 1 to be tested sequentially comprises an upper metal frame 101 and a lower metal frame 102 from top to bottom, wherein the upper metal frame 101 and the lower metal frame 102 are adhered together through liquid optical cement 103; the overall size of the upper metal frame 101 is larger than that of the lower metal frame 102, and the touch detection unit 3 is located at a position above the product 1 to be measured.

The product 1 to be tested is formed by flatly attaching an upper metal frame 101 and a lower metal frame 102 which are different in size and different in shape together by liquid optical cement 103, wherein the appearance of the upper metal frame 101 is larger than that of the lower metal frame 102, and the upper metal frame 101 is of a structure with a large upper size and a small lower size for short.

As shown in fig. 3 and 4, a second embodiment of the present utility model: the product 1 to be tested is of a small-top and large-bottom type structure, and the upper metal frame 101 of the product 1 is generally placed on the supported reference bearing platform 5 during detection.

The product 1 to be tested sequentially comprises an upper metal frame 101 and a lower metal frame 102 from top to bottom, wherein the upper metal frame 101 and the lower metal frame 102 are adhered together through liquid optical cement 103; the overall size of the upper metal frame 101 is smaller than that of the lower metal frame 102, and the touch detection unit 3 is located at a position below the product 1 to be measured.

The product 1 to be tested is formed by flatly attaching an upper metal frame 101 and a lower metal frame 102 which are different in size and different in shape together by liquid optical cement 103, wherein the appearance of the upper metal frame 101 is smaller than that of the lower metal frame 102, and the lower metal frame 101 is of a structure with a large upper part and a large lower part.

The upper metal frame 101 and the lower metal frame 102 of the product 1 to be tested are only illustrated by the schematic structure of the present utility model, and are not decomposed any more, and they may be respectively composed of single or multi-layer (more than one layer) structural components, but all the different components are flat and bonded together by the liquid optical adhesive 103 as long as they are the same as or similar to the present utility model.

Referring to fig. 5, the metal probe on the touch detection unit 3 is connected to the touch detection control module 20, when the metal detection probe contacts with the lower metal frame 102, according to the mature capacitance detection principle, the distance between the metal detection probe and the metal iron frame of the product to be detected and the signal quantity during contact are combined, and the effective trigger threshold value is matched, so that whether the height difference at the product to be detected meets the control requirement can be accurately judged. And then the first I/O interface or the second I/O interface is used for being connected with the feedback result of the auxiliary acousto-optic and electric feedback device 30 to judge whether the detection is qualified or not.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features being indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected: can be mechanically or electrically connected: the terms are used herein to denote any order or quantity, unless otherwise specified.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and it should be noted that it is possible for those skilled in the art to make several improvements and modifications without departing from the technical principle of the present utility model, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. The device for detecting the multipoint height difference of the touch screen comprises a product to be detected (1), a reference bearing platform (2) and a touch detection unit (3), and is characterized in that the reference bearing platform (2) is positioned at the lower position of the product to be detected (1), and the touch detection unit (3) is positioned at the upper position or the lower position of the product to be detected (1); the touch detection device comprises a touch detection unit (3), and is characterized in that a plurality of metal probes are arranged on the touch detection unit (3), a touch detection control module (20) is arranged in the touch detection unit (3), the touch detection control module (20) comprises a power supply processing unit (21) and a touch detection chip unit (22), power is supplied to the touch detection chip unit (22) after being processed by the power supply processing unit (21), the plurality of metal probes are respectively connected to the touch detection chip unit (22), and the touch detection chip unit (22) outputs collected signals through a first I/O interface.

2. The device for detecting the multi-point height difference of the touch screen according to claim 1, wherein the product (1) to be detected sequentially comprises an upper metal frame (101) and a lower metal frame (102) from top to bottom, and the upper metal frame (101) and the lower metal frame (102) are attached together through liquid optical cement (103); the overall size of the upper metal frame (101) is larger than that of the lower metal frame (102), and the touch detection unit (3) is located above the product (1) to be detected.

3. The device for detecting the multi-point height difference of the touch screen according to claim 1, wherein the product (1) to be detected sequentially comprises an upper metal frame (101) and a lower metal frame (102) from top to bottom, and the upper metal frame (101) and the lower metal frame (102) are attached together through liquid optical cement (103); the overall size of the upper metal frame (101) is smaller than that of the lower metal frame (102), and the touch detection unit (3) is located below the product (1) to be detected.

4. The device for detecting the multi-point height difference of the touch screen according to claim 1, wherein the touch detection control module (20) further comprises a capacitive sensor (23), and a plurality of metal probes are respectively connected to the touch detection chip unit (22) through the capacitive sensors (23) of multiple channels.

5. The device for detecting the multi-point height difference of the touch screen according to claim 1, wherein the touch detection control module (20) further comprises an MCU controller (50), the MCU controller (50) is in communication connection with the touch detection chip unit (22) through an I2C interface, and signals collected by the touch detection chip unit (22) are processed by the MCU controller (50) and output through a second I/O interface.

6. The apparatus for multipoint height difference detection according to claim 5, wherein said MCU controller (50) reserves a burn-in interface (51) and a debug interface (52).

7. The device for detecting the multi-point height difference of the touch screen according to claim 5, further comprising an acousto-optic feedback device (30), wherein the MCU controller (50) is connected with the acousto-optic feedback device (30) through a second I/O interface.

8. The device for detecting the multi-point height difference of the touch screen according to claim 1, further comprising an acousto-optic feedback device (30), wherein the touch detection chip unit (22) is connected with the acousto-optic feedback device (30) through a first I/O interface.