Touch panel detection device

Abstract

The touch panel detection device comprises a metal probe, a detection circuit, an indicator light and a USB interface, the metal probe is used for collecting a self-sweep frequency signal of a touch panel, the detection circuit is connected with the metal probe, receives the self-sweep frequency signal and carries out amplification and low-frequency filtering on the self-sweep frequency signal, and the indicator light is connected with the detection circuit. The detection circuit receives the amplified and low-frequency filtered signal to drive the indicator light to be turned on or turned off, and a ground wire and a power line of the USB interface are connected with the detection circuit; wherein when the USB interface is connected with electronic equipment with a touch panel, the electronic equipment supplies power to the detection device.

Description

Technical Field

[0001] The present application relates to the field of computer technology, and in particular to a touch panel detection device. Background Art

[0002] When the touchpad is not functional, an oscilloscope will be used to capture a self-sweep signal of the touchpad itself to determine whether the touchpad is working and whether there is a problem with the touchpad itself.

[0003] The existing technology has the following problems: the oscilloscope is too large and heavy to be carried, and is inconvenient to operate. When using it, a piece of copper foil needs to be covered on the surface of the touch panel to obtain the self-sweep frequency signal, and the detection takes a long time. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a touch panel detection device.

[0005] A first aspect of the present application provides a touch panel detection device, comprising:

[0006] A metal probe, wherein the metal probe is used to collect a self-sweep frequency signal of the touch panel;

[0007] A detection circuit, connected to the metal probe, receives the self-sweeping frequency signal, and amplifies and performs low-frequency filtering on the self-sweeping frequency signal;

[0008] An indicator light, connected to the detection circuit, receiving the amplified and low-frequency filtered signal to drive the indicator light to light up or turn off; and

[0009] A USB interface, a ground line and a power line of the USB interface are connected to the detection circuit;

[0010] When the USB interface is connected to an electronic device having the touch panel, the electronic device supplies power to the detection device.

[0011] According to an embodiment of the present application, the touch panel detection device further includes: a packaging box for accommodating the detection circuit, and the indicator light is arranged on a surface of the packaging box.

[0012] According to one embodiment of the present application, the detection circuit includes a transistor, and the USB interface provides a DC bias voltage at the base and collector of the transistor.

[0013] According to one embodiment of the present application, the detection circuit further includes: a first resistor, the first resistor being connected to the metal probe; and

[0014] A first capacitor, wherein the first capacitor is connected to the first resistor and the base of the transistor respectively;

[0015] The metal probe collects the AC signal on the touch panel and couples it to the base of the transistor through the first resistor and the first capacitor.

[0016] According to one embodiment of the present application, the detection circuit further includes: a fourth resistor, the fourth resistor is connected to the emitter of the transistor, and the collector-emitter voltage is output after passing through the fourth resistor.

[0017] According to one embodiment of the present application, the detection circuit further includes: a second capacitor, which is connected in parallel with the fourth resistor and outputs an AC signal to the indicator light to drive the indicator light to light up or turn off.

[0018] According to one embodiment of the present application, the detection circuit further includes: a first inductor, a fourth capacitor and a third resistor, and the first inductor, the fourth capacitor and the third resistor are respectively connected to the USB power line and the collector of the transistor.

[0019] According to an embodiment of the present application, the touch panel detection device further includes: a second resistor, one end of the second resistor is connected to the USB power line, and the other end of the second resistor is connected to the base of the transistor and the first capacitor.

[0020] According to one embodiment of the present application, the touch panel detection device further includes: a third capacitor, one end of which is respectively connected to the first inductor, the fourth capacitor and the third resistor, and the other end of which is connected to the indicator light.

[0021] According to one embodiment of the present application, the touch panel detection device further includes: a fifth resistor, which is connected to the second capacitor and amplifies and filters the AC signal together with the first inductor, the fourth capacitor, the second resistor, the third resistor, and the third capacitor.

[0022] The touch panel detection device provided in the present application is easy to carry and operate. When in use, a self-scanning frequency signal can be obtained without the need for copper foil to cover the surface of the touch panel. The detection time is short, the touch panel detection efficiency is improved, and the user experience is optimized. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of a touch panel detection device according to an embodiment of the present application;

[0024] Figure 2 Schematic diagram of the detection circuit structure of an embodiment of the present application.

[0025] Reference numerals

[0026] 1001. Metal probe; 1002. Indicator light; 1003. USB interface; 1004. Packaging box; 1005. Wire. DETAILED DESCRIPTION

[0027] Various aspects and features of the present application are described herein with reference to the accompanying drawings.

[0028] It should be understood that various modifications may be made to the embodiments of the present application. Therefore, the above description should not be considered as limiting, but only as an example of an embodiment. Other modifications within the scope and spirit of the present application will occur to those skilled in the art.

[0029] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present application and, together with the general description of the present application given above and the detailed description of the embodiments given below, serve to explain the principles of the present application.

[0030] These and other characteristics of the present application will become apparent from the following description of a preferred form of embodiment given as a non-limiting example with reference to the accompanying drawings.

[0031] It should also be understood that although the present application has been described with reference to some specific examples, those skilled in the art will be able to readily implement many other equivalent forms of the present application.

[0032] According to a touch panel detection device in one embodiment of the present application, Figure 1 As shown, the touch panel detection device includes a metal probe 1001, a detection circuit (not shown), an indicator light 1002, a USB interface 1003 and a wire 1005. The metal probe 1001 is used to collect the self-sweeping frequency signal of the touch panel; the detection circuit (not shown) is connected to the metal probe 1001 to receive the self-sweeping frequency signal, and amplifies and low-frequency filters the self-sweeping frequency signal; the indicator light 1002 is connected to the detection circuit, and receives the signal after amplification and low-frequency filtering to drive the indicator light 1002 to light up or go out; the ground wire and power line of the USB interface are connected to the detection circuit; the metal probe 1001, the indicator light 1002, the detection circuit and the USB interface are connected through the wire 1005. Among them, when the USB interface 1003 is connected to an electronic device with a touch panel, the electronic device supplies power to the detection device.

[0033] The touch panel detection device provided in the present application is easy to carry and operate. When in use, a self-scanning frequency signal can be obtained without the need for copper foil to cover the surface of the touch panel. The detection time is short, the touch panel detection efficiency is improved, and the user experience is optimized.

[0034] According to an embodiment of the present application, the touch panel detection device further includes a packaging box 1004 for accommodating the detection circuit, and the indicator light is disposed on a surface of the packaging box 1004 .

[0035] According to one embodiment of the present application, the detection circuit includes a transistor, and the USB interface provides a DC bias voltage to the base and collector of the transistor.

[0036] According to one embodiment of the present application, the detection circuit further includes a first resistor and a first capacitor, the first resistor is connected to the metal probe, and the first capacitor is connected to the first resistor and the base of the transistor respectively. The metal probe collects the AC signal on the touch panel, and couples it to the base of the transistor through the first resistor and the first capacitor, and the AC signal is amplified after passing through the transistor.

[0037] According to one embodiment of the present application, the detection circuit further includes a fourth resistor, the fourth resistor is connected to the emitter of the transistor, and the amplified AC signal outputs a collector-emitter voltage after passing through the fourth resistor.

[0038] According to one embodiment of the present application, the detection circuit also includes a second capacitor, which is connected in parallel with a fourth resistor to filter out the DC signal and output the amplified AC signal to the indicator light to drive the indicator light to light up or turn off.

[0039] According to one embodiment of the present application, the detection circuit further includes: a first inductor, a fourth capacitor and a third resistor, and the first inductor, the fourth capacitor and the third resistor are respectively connected to the USB power line and the collector of the transistor.

[0040] According to one embodiment of the present application, the touch panel detection device further includes a second resistor, one end of the second resistor is connected to the USB power line, and the other end of the second resistor is connected to the base of the transistor and the first capacitor.

[0041] According to one embodiment of the present application, the touch panel detection device further includes a third capacitor, one end of the third capacitor is respectively connected to the first inductor, the fourth capacitor and the third resistor, and the other end of the third capacitor is connected to the indicator light.

[0042] According to one embodiment of the present application, the touch panel detection device further includes a fifth resistor, which is connected to the second capacitor and amplifies and filters the AC signal together with the first inductor, the fourth capacitor, the second resistor, the third resistor, and the third capacitor.

[0043] like Figure 2 The schematic diagram of the detection circuit structure of the present application is shown in FIG. Figure 2 As shown, the detection circuit includes a transistor PQ1, which includes a pin 2 as a base, a pin 3 as an emitter, and a pin 1 as a collector. The USB interface provides a DC bias voltage to the base pin 2 and the collector pin 3 of the transistor PQ1.

[0044] The detection circuit may further include a first resistor R1 and a first capacitor C1, wherein the first resistor R1 is connected to the metal probe 1001, and the first capacitor C1 is respectively connected to the first resistor R1 and the base pin 2 of the transistor PQ1. The metal probe 1001 collects the AC signal on the touch panel, and couples it to the base pin 2 of the transistor PQ1 through the first resistor R1 and the first capacitor C1, and the AC signal is amplified after passing through the transistor PQ1.

[0045] The detection circuit may further include a fourth resistor R4 (emitter resistor), the fourth resistor R4 is connected to the emitter pin 1 of the transistor PQ1, and the amplified AC signal is output as a collector-emitter voltage V after passing through the fourth resistor R4. ce .

[0046] The detection circuit may further include a second capacitor C2, which is connected in parallel with the fourth resistor R4 to filter out the DC signal and output the amplified AC signal to the indicator light 1002 to drive the indicator light 1002 to light up or turn off. The indicator light 1002 may be an LED.

[0047] The AC amplified signal drives the LED (component LED1) to display. Due to the visual persistence characteristics of the human eye (a flicker of less than 0.4 seconds appears to be continuously bright to the human eye), when the touch panel is working normally, LED1 can be seen to be bright. Otherwise, LED1 is dark.

[0048] The detection circuit may further include a first inductor L1 , a fourth capacitor C4 and a third resistor R3 , wherein the first inductor L1 , the fourth capacitor C4 and the third resistor R3 are respectively connected to the USB power line and the collector pin 3 of the transistor PQ1 .

[0049] The detection circuit may further include a second resistor R2, one end of the second resistor R2 is connected to the USB power line, and the other end of the second resistor R2 is connected to the base pin 2 of the transistor PQ1 and the first capacitor C1.

[0050] The detection circuit may further include a third capacitor C3 , one end of the third capacitor C3 is respectively connected to the first inductor L1 , the fourth capacitor C4 and the third resistor R3 , and the other end of the third capacitor C3 is connected to the indicator light 1002 .

[0051] The detection circuit may further include a fifth resistor R5 , which is connected to the second capacitor C2 , and amplifies and filters the AC signal together with the first inductor L1 , the fourth capacitor C4 , the second resistor R2 , the third resistor R3 , and the third capacitor C3 .

[0052] The detection circuit provided in the present application can set the amplification factor of the collected signal by setting different values ​​of the capacitors C1 / C2 / C3 / C4, the resistors R1 / R2 / R3 / R4 / R5, and the inductor L1.

[0053] Any process or method description in the flowchart or otherwise described herein can be understood as a module, fragment or portion of a code representing one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes other implementations, in which the functions may not be performed in the order shown or discussed, including performing the functions in a substantially simultaneous manner or in a reverse order according to the functions involved, which should be understood by a person skilled in the art of the technical field to which the embodiments of the present application belong. The processor performs the various methods and processes described above. For example, the method implementation in the present application can be implemented as a software program, which is tangibly contained in a machine-readable medium, such as a memory. In some embodiments, part or all of the software program can be loaded and / or installed via a memory and / or a communication interface. When the software program is loaded into the memory and executed by the processor, one or more steps in the method described above can be performed. Alternatively, in other embodiments, the processor can be configured to perform one of the above methods in any other appropriate manner (e.g., by means of firmware).

[0054] The logic and / or steps represented in the flowchart or otherwise described herein may be embodied in any readable storage medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other system that can fetch instructions from and execute instructions on an instruction execution system, apparatus, or device), or in combination with such instruction execution systems, apparatuses, or devices.

[0055] It should be understood that the various parts of the present application can be implemented by hardware, software or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0056] A person skilled in the art may understand that all or part of the steps of implementing the above-mentioned implementation method may be completed by instructing related hardware through a program, and the program may be stored in a readable storage medium, which, when executed, includes one or a combination of the steps of the implementation method.

[0057] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a readable storage medium. The storage medium may be a read-only memory, a disk or an optical disk, etc.

[0058] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic representations of the above terms are not necessarily the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments / methods or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments / methods or examples described in this specification and the features of the different embodiments / methods or examples, unless they are contradictory.

[0059] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0060] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present application, and are not intended to limit the scope of the present application. For those skilled in the art, other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present application.

Claims

1. A touch panel detection device, characterized in that: include: A metal probe, wherein the metal probe is used to collect a self-sweep frequency signal of the touch panel; A detection circuit, connected to the metal probe, receives the self-sweeping frequency signal, and amplifies and performs low-frequency filtering on the self-sweeping frequency signal; An indicator light, connected to the detection circuit, receives the amplified and low-frequency filtered signal to drive the indicator light to light up or turn off; as well as A USB interface, a ground line and a power line of the USB interface are connected to the detection circuit; When the USB interface is connected to an electronic device having the touch panel, the electronic device supplies power to the detection device.

2. The touch panel detection device according to claim 1, characterized in that: Also includes: The packaging box is used to accommodate the detection circuit, and the indicator light is arranged on a surface of the packaging box.

3. The touch panel detection device according to claim 1, characterized in that: The detection circuit includes a transistor, and the USB interface provides a DC bias voltage to the base and collector of the transistor.

4. The touch panel detection device according to claim 3, characterized in that: The detection circuit also includes: a first resistor, the first resistor being connected to the metal probe; and A first capacitor, wherein the first capacitor is connected to the first resistor and the base of the transistor respectively; The metal probe collects the AC signal on the touch panel and couples it to the base of the transistor through the first resistor and the first capacitor.

5. The touch panel detection device according to claim 4, characterized in that: The detection circuit also includes: A fourth resistor is connected to the emitter of the transistor, and a collector-emitter voltage is output after passing through the fourth resistor.

6. The touch panel detection device according to claim 5, characterized in that: The detection circuit also includes: A second capacitor is connected in parallel with the fourth resistor, and outputs an AC signal to the indicator light to drive the indicator light to light up or turn off.

7. The touch panel detection device according to claim 6, characterized in that: The detection circuit also includes: A first inductor, a fourth capacitor and a third resistor, wherein the first inductor, the fourth capacitor and the third resistor are respectively connected to the USB power line and the collector of the transistor.

8. The touch panel detection device according to claim 7, characterized in that: Also includes: A second resistor, one end of the second resistor is connected to the USB power line, and the other end is connected to the base of the transistor and the first capacitor.

9. The touch panel detection device according to claim 8, characterized in that: Also includes: A third capacitor, one end of the third capacitor is respectively connected to the first inductor, the fourth capacitor and the third resistor, and the other end of the third capacitor is connected to the indicator light.

10. The touch panel detection device according to claim 9, characterized in that: Also includes: A fifth resistor, wherein the fifth resistor is connected to the second capacitor, and together with the first inductor, the fourth capacitor, the second resistor, the third resistor, and the third capacitor, amplifies and filters the AC signal.

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