Touch screen trigger device

Abstract

The present invention discloses a touch screen trigger device. The device includes: a touch screen drive electrode signal detection circuit provided with a plurality of detection circuit electrodes correspondingly connected to the drive electrodes of the touch screen, a trigger electrode correspondingly connected to the receiving electrode of the touch screen, a control unit and a control button; the control unit is electrically connected to the touch screen drive electrode signal detection circuit, and is used to detect the touch screen drive electrode signal detection circuit for scanning the touch screen's own drive electrode signal; the control unit is also electrically connected to the trigger electrode and the control button, respectively, and is used to send an amplified touch screen's own drive electrode signal to the corresponding trigger electrode according to the trigger instruction of the control button. The purpose of operating the touch screen without touching the touch screen with a finger is achieved, thereby realizing the technical effect of being able to conveniently operate the touch screen in some scenarios where it is inconvenient to use the touch screen or the touch screen cannot be touched, but the touch screen needs to be controlled.

Description

Technical Field

[0001] The present application relates to the technical field of touch screen control, and in particular to a touch screen triggering device. Background Art

[0002] Projected capacitive touch screen has the function of multi-finger touch, and has the advantages of high light transmittance, fast response speed and long life.

[0003] The projected capacitive screen is composed of a driving electrode and a receiving electrode. The driving electrode sends a low-voltage touch screen's own driving electrode signal to the receiving electrode to form a stable current. When the human body touches the capacitive screen, the human body is equivalent to a large conductor, and the finger and the capacitive screen form an equivalent capacitor. The position where the finger touches increases the capacitance value of the touch point due to the superposition of the human body's equivalent capacitance. The touch screen's own driving electrode signal can flow into the receiving electrode and the human body through this equivalent capacitance. In this way, the touch screen's own driving electrode signal received by the receiving electrode increases due to the increase in capacitance. The signal processing circuit can determine the touched point by calculating the signal strength received by the receiving electrode.

[0004] ITO is used to make horizontal and vertical electrode arrays on the glass surface. These horizontal and vertical electrodes constitute capacitors, which are usually called self-capacitance. When a finger touches the capacitive screen, the capacitance of the finger will be superimposed on the capacitance of the screen, increasing the capacitance of the screen.

[0005] Although touch screens greatly facilitate users' daily operations on various smart terminals, there are still some situations where it is inconvenient to use a touch screen, or the touch screen cannot be used to achieve good operation, or the touch screen cannot be touched, but the touch screen needs to be controlled. For example: hospitals, factory industrial control, mobile phone game controllers, etc.

[0006] With regard to the problem in the related art of how to make the touch screen produce the same control effect as when the finger is not touching the touch screen, no effective solution has been proposed yet. Summary of the invention

[0007] The main purpose of the present application is to provide a touch screen triggering device that can perform touch screen operations without touching the touch screen with a finger, so as to solve the problems existing in the related art.

[0008] In order to achieve the above objective, according to one aspect of the present application, a touch screen triggering device is provided.

[0009] The touch screen triggering device according to the present application includes:

[0010] A touch screen driving electrode signal detection circuit is provided with a plurality of detection circuit electrodes corresponding to the driving electrodes of the touch screen, a trigger electrode corresponding to the receiving electrodes of the touch screen, a control unit and a control button; the control unit is electrically connected to the touch screen driving electrode signal detection circuit, and is used to detect the touch screen driving electrode signal detection circuit that performs the touch screen driving electrode signal scanning; the control unit is also electrically connected to the trigger electrode and the control button respectively, and is used to send an amplified touch screen driving electrode signal to the corresponding trigger electrode according to the trigger instruction of the control button.

[0011] Further, as in the aforementioned touch screen triggering device, the control unit includes: a power module, a signal processing module and a central processing unit;

[0012] The central processing unit is electrically connected to the power module and is used to receive power from the power module;

[0013] The signal processing module is electrically connected to the power supply module, the central processing unit, the touch screen driving electrode signal detection circuit and the trigger electrode respectively, and is used to detect the touch screen driving electrode signal detection circuit that performs the touch screen's own driving electrode signal scanning, and amplify the touch screen's own driving electrode signal detected by the touch screen driving electrode signal detection circuit and transmit it to the corresponding trigger electrode according to the control instructions of the central processing unit.

[0014] Further, as in the aforementioned touch screen triggering device, the signal processing module includes: a first signal amplifying circuit, a second signal amplifying circuit, a boosting circuit and a first digitally controlled analog switch;

[0015] The first signal amplifying circuit is electrically connected to the power module, the touch screen driving electrode model detection circuit and the central processing unit respectively;

[0016] The second signal amplifying circuit is electrically connected to the touch screen driving electrode signal detecting circuit, the boosting circuit and the first digital controlled analog switch respectively;

[0017] The boost circuit is also electrically connected to the power module;

[0018] The first digitally controlled analog switch is also electrically connected to the second signal amplifying circuit, the power module, the central processing unit and the trigger electrode.

[0019] Further, as in the aforementioned touch screen triggering device, the power module includes: a power management circuit and a battery;

[0020] The power management circuit is electrically connected to the battery, the boost circuit, the first signal amplifying circuit, the first digital controlled analog switch and the central processing unit respectively.

[0021] Further, as in the aforementioned touch screen triggering device, the signal processing module further comprises: a second digitally controlled analog switch;

[0022] The second digitally controlled analog switch is electrically connected to the first signal amplifying circuit and the central processing unit respectively.

[0023] Further, as in the aforementioned touch screen triggering device, the touch screen driving electrode signal detection circuit and the triggering electrode are arranged at the edge position of the touch screen surface.

[0024] Further, as in the aforementioned touch screen trigger device, the touch screen drive electrode model detection circuit and the trigger electrode are respectively one of an FPC soft circuit board, transparent glass with a conductive coating, or a transparent film with a conductive coating.

[0025] Further, as in the aforementioned touch screen triggering device, the boost circuit is a processing module that can amplify the voltage level of the power module to a positive or negative 12V level or a positive 24V level.

[0026] Furthermore, as in the aforementioned touch screen triggering device, the central processor adopts a microprocessor of model HT32F52331.

[0027] Furthermore, as in the aforementioned touch screen triggering device, the battery is a rechargeable lithium battery.

[0028] In the embodiment of the present application, a touch screen trigger device is adopted, by setting: a touch screen driving electrode signal detection circuit having a plurality of detection circuit electrodes correspondingly connected to the driving electrodes of the touch screen, a trigger electrode correspondingly connected to the receiving electrode of the touch screen, a control unit and a control button; the control unit is electrically connected to the touch screen driving electrode signal detection circuit, and is used to detect the touch screen driving electrode model detection circuit for scanning the touch screen driving electrode signal; the control unit is also electrically connected to the trigger electrode and the control button respectively, and is used to send the amplified touch screen driving electrode signal to the corresponding trigger electrode according to the trigger instruction of the control button. The purpose of touch screen operation without touching the touch screen with fingers is achieved, thereby achieving the technical effect of being able to conveniently operate the touch screen in some situations such as hospitals, factory industrial control, mobile phone game controllers, etc., where it is inconvenient to use the touch screen or the touch screen cannot be touched, but the touch screen needs to be controlled, thereby solving the technical problems existing in the related technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The schematic embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0030] Figure 1 is a schematic diagram of functional module connections of a device according to an embodiment of the present application;

[0031] Figure 2 is a schematic diagram of functional module connections of a device according to another embodiment of the present application;

[0032] Figure 3 is a schematic diagram of the circuit structure of a central processing unit according to an embodiment of the present application;

[0033] Figure 4 is a circuit structure diagram of a power management circuit according to an embodiment of the present application; and

[0034] Figure 5 It is a schematic diagram of the circuit structure of a detection electrode, a signal amplification circuit, a digitally controlled analog switch and a detection electrode according to an embodiment of the present application. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0036] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0037] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0038] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0039] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] like Figure 1 As shown, a touch screen triggering device is provided, comprising: a plurality of detection circuit electrodes ( Figure 5 The touch screen driving electrode signal detection circuit 1 (that is, a plurality of the detection circuit electrodes are arranged on one touch screen driving electrode signal detection circuit 1, and the monitoring circuit electrodes and the driving electrodes can be arranged in a one-to-many or a many-to-one arrangement), and the trigger electrode 2 ( Figure 5 As shown in P3), a control unit 3 and a control button 4, wherein the trigger electrode 2 and the receiving electrode can also be arranged in a one-to-many or many-to-1 arrangement; the control unit 3 is electrically connected to the touch screen drive electrode signal detection circuit 1, and is used to detect the touch screen drive electrode signal detection circuit 1 that performs touch screen self-drive electrode signal scanning; the control unit 3 is also electrically connected to the trigger electrode 2 and the control button 4, respectively, and is used to send an amplified touch screen self-drive electrode signal to the corresponding trigger electrode 2 according to the trigger instruction of the control button 4.

[0042] Specifically, the correspondence between different control buttons 4 and specific areas on the touch screen (i.e., the touch screen driving electrode signal detection circuit 1 and the trigger electrode 2 of the corresponding touch area) is pre-set; when the user presses the control button 4, the touch screen driving electrode model detection circuit 1 that performs the touch screen self-driving electrode signal scanning is monitored according to the correspondence, and when the touch screen driving electrode model detection circuit 1 in the specific area performs the touch screen self-driving electrode signal scanning, the control unit 3 controls the trigger electrode 2 corresponding to the column to be triggered to transmit the amplified touch screen self-driving electrode signal. Since the touch screen self-driving electrode signal on the trigger electrode 2 is an amplified strong signal, even when the human body does not touch the touch screen and the surface capacitance does not change, the signal strength received on the receiving electrode inside the touch screen will become stronger, thereby achieving the purpose of triggering the touch screen.

[0043] The purpose of performing touch screen operations without touching the touch screen with fingers is achieved, thereby realizing the technical effect of being able to conveniently perform touch screen operations in scenarios where it is inconvenient to use the touch screen or cannot be touched, but the touch screen needs to be controlled, such as in hospitals, factory industrial control, mobile phone game controllers, etc.

[0044] In some embodiments, as in the aforementioned touch screen triggering device, the control unit 3 includes: a power module, a signal processing module and a central processor 31; specifically, the power module is used to provide power for system operation and to provide a voltage signal to the trigger electrode 2, and finally forms an amplified touch screen driving electrode signal under the processing of the signal processing module;

[0045] The central processing unit 31 is electrically connected to the power module for receiving power from the power module; generally, the power module uses a 3.3V regulated power supply for the power supply of the system including the central processing unit 31;

[0046] The signal processing module is electrically connected to the power supply module, the central processing unit 31, the touch screen drive electrode signal detection circuit 1 and the trigger electrode 2 respectively, and is used to detect the touch screen drive electrode signal detection circuit 1 that performs the touch screen's own drive electrode signal scanning, and amplify the touch screen's own drive electrode signal detected by the touch screen drive electrode model detection circuit 1 and transmit it to the corresponding trigger electrode 2 according to the control instructions of the central processing unit 31.

[0047] Specifically, the touch screen driving electrode signal detection circuit detects the touch screen's own driving electrode signal, amplifies the driving signal as described above, and transmits it to the touch screen's receiving electrode through a trigger electrode close to the glass surface using the capacitance principle, so that the screen detects and triggers the touch screen pressing action.

[0048] like Figure 1 and Figure 5 As shown, in some embodiments, as in the aforementioned touch screen trigger device, the signal processing module includes: a first signal amplifying circuit 32, a second signal amplifying circuit 33, a boosting circuit 34 and a first digitally controlled analog switch 35 ( Figure 5 HC4051 in );

[0049] The first signal amplifying circuit 32 is electrically connected to the power module, the touch screen driving electrode signal detection circuit 1 and the central processing unit 31 respectively; since the normal operating voltages of the CPU and the touch screen driving electrode signal detection circuit are both 3.3V, the central processing unit 31 cannot detect the touch screen's own driving electrode signal at a voltage of 1V; therefore, through the connection between the touch screen driving electrode signal detection circuit 1 and the first signal amplifying circuit 32, the touch screen's own driving electrode signal is amplified, so that the central processing unit 31 can detect the touch screen's own driving electrode signal, and then determine the driving electrode currently being scanned;

[0050] The second signal amplifying circuit 33 is electrically connected to the touch screen driving electrode signal detecting circuit 1, the boosting circuit 34 and the first digital control analog switch 35 respectively; the second signal amplifying circuit 33 is connected to the boosting circuit 34 to enable the signal to boost and amplify the touch screen driving electrode signal according to the boosting function of the boosting circuit 34;

[0051] The boost circuit 34 is also electrically connected to the power module;

[0052] The first digital control analog switch 35 is also electrically connected to the second signal amplifying circuit 33, the power module, the central processor 31 and the trigger electrode 2. Therefore, through the connection between the first digital control analog switch 35 and the central processor 31, the first digital control analog switch 35 can be switched according to the control of the central processor 31, and then the amplified touch screen self-driving electrode signal can be transmitted to the receiving electrode of the specific touch screen, so that the screen can detect and trigger the pressing action of the area corresponding to the control button 4 in the touch screen.

[0053] like Figure 1 As shown, in some embodiments, such as the aforementioned touch screen triggering device, the power module includes: a power management circuit 36 ​​and a battery 37;

[0054] The power management circuit 36 ​​is electrically connected to the battery 37 , the boost circuit 34 , the first signal amplifying circuit 32 , the first digitally controlled analog switch 35 and the central processing unit 31 , respectively.

[0055] Specifically, Figure 4 As shown, the power management circuit 36 ​​is used to provide 3.3V operating voltage to each functional module in the device, and when the battery 37 is a rechargeable battery, it also includes a charging indicator light function.

[0056] like Figure 2 As shown, in some embodiments, as in the aforementioned touch screen triggering device, the signal processing module further includes: a second digitally controlled analog switch 38;

[0057] The second digital control analog switch 38 is electrically connected to the first signal amplifying circuit 32 and the central processing unit 31. By setting the second digital control analog switch 38, one pin of the central processing unit 31 can be connected to 8 touch screen drive electrode signal detection circuits 1, and one pin can cyclically scan 8 detection circuit electrodes, thereby saving IO port pins of the central processing unit 31, saving costs, and effectively reducing product failure rate.

[0058] In some embodiments, as in the aforementioned touch screen triggering device, the touch screen driving electrode signal detection circuit 1 and the trigger electrode 2 are arranged at the edge of the touch screen surface, thereby reducing the occlusion and influence on the display content of the touch screen.

[0059] In some embodiments, as in the aforementioned touch screen trigger device, the touch screen drive electrode signal detection circuit 1 and the trigger electrode 2 are respectively one of an FPC soft circuit board, a transparent glass with a conductive coating, or a transparent film with a conductive coating. The touch screen drive electrode signal detection circuit 1 and the trigger electrode 2 made of the above materials can have good transparency and triggering effect.

[0060] In some embodiments, such as the aforementioned touch screen trigger device, the boost circuit 34 is a processing module that can amplify the voltage level of the power module to a positive or negative 12V level or a positive 24V level. High voltage is beneficial to improve the trigger sensitivity and triggering when a protective film is attached to the screen.

[0061] In some embodiments, such as the aforementioned touch screen trigger device, the central processor 31 uses a microprocessor of model HT32F52331. This type of microprocessor has the characteristics of strong processing capability, low power consumption, long service life, and stable operation, which can effectively improve the service life and operation processing capability of the overall device.

[0062] In some embodiments, such as the aforementioned touch screen trigger device, the battery 37 is a rechargeable lithium battery. Using a rechargeable lithium battery can effectively reduce battery waste, save energy, and reduce waste.

[0063] Obviously, those skilled in the art should understand that the control function in the present invention described above only involves the processing of instructions or electrical signals, and does not involve specific software and data processing.

[0064] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A touch screen trigger device, characterized in that: include: A touch screen drive electrode signal detection circuit (1) is provided with a plurality of detection circuit electrodes for correspondingly connecting to the drive electrodes of the touch screen, a trigger electrode (2) for correspondingly connecting to the receiving electrodes of the touch screen, a control unit (3) and a control button (4); the control unit (3) is electrically connected to the touch screen drive electrode signal detection circuit (1) and is used to detect the touch screen drive electrode signal detection circuit (1) for scanning the touch screen drive electrode signal; the control unit (3) is also electrically connected to the trigger electrode (2) and the control button (4) respectively and is used to send an amplified touch screen drive electrode signal to the corresponding trigger electrode (2) according to a trigger instruction of the control button (4); The control unit (3) comprises: a power supply module, a signal processing module and a central processing unit (31); The central processing unit (31) is electrically connected to the power module and is used to receive power from the power module; The signal processing module is electrically connected to the power module, the central processing unit (31), the touch screen drive electrode signal detection circuit (1) and the trigger electrode (2) respectively, and is used to detect the touch screen drive electrode signal detection circuit (1) that performs touch screen drive electrode signal scanning, and amplify the touch screen drive electrode signal detected by the touch screen drive electrode signal detection circuit (1) according to the control instruction of the central processing unit (31) and transmit it to the corresponding trigger electrode (2); the signal processing module includes: a first signal amplification circuit (32), a second signal amplification circuit (33), a boost circuit (34) and a first digital control analog switch (35); A first signal amplifying circuit (32), a second signal amplifying circuit (33), a voltage boosting circuit (34) and a first digitally controlled analog switch (35); The first signal amplifying circuit (32) is electrically connected to the power module, the touch screen driving electrode signal detection circuit (1) and the central processing unit (31) respectively; The second signal amplifying circuit (33) is electrically connected to the touch screen driving electrode signal detecting circuit (1), the boosting circuit (34) and the first digital controlled analog switch (35) respectively; The boost circuit (34) is also electrically connected to the power module; The first digitally controlled analog switch (35) is also electrically connected to the second signal amplifying circuit (33), a power module, a central processing unit (31) and a trigger electrode (2); The power module comprises: a power management circuit (36) and a battery (37); The power management circuit (36) is electrically connected to the battery (37), the boost circuit (34), the first signal amplification circuit (32), the first digital control analog switch (35) and the central processing unit (31) respectively; The touch screen triggering device is characterized in that the signal processing module further comprises: a second digitally controlled analog switch (38); The second digitally controlled analog switch (38) is electrically connected to the first signal amplifying circuit (32) and the central processing unit (31) respectively.

2. The touch screen triggering device according to claim 1, characterized in that: The touch screen drive electrode signal detection circuit (1) and the trigger electrode (2) are arranged at the edge of the touch screen surface.

3. The touch screen triggering device according to claim 1, characterized in that: The touch screen drive electrode signal detection circuit (1) and the trigger electrode (2) are respectively one of an FPC soft circuit board, transparent glass with a conductive coating, or a transparent film with a conductive coating.

4. The touch screen triggering device according to claim 1, characterized in that: The boost circuit (34) is a processing module capable of amplifying the voltage level of the power module to a positive or negative 12V level or a positive 24V level.

5. The touch screen triggering device according to claim 1, characterized in that: The central processing unit (31) adopts a microprocessor of model HT32F52331.

6. The touch screen triggering device according to claim 1, characterized in that: The battery (37) is a rechargeable lithium battery.

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