Touch control precision compensation circuit

Abstract

The utility model provides a touch control precision compensation circuit. The touch control precision compensation circuit comprises a touch switch module, a single-chip microcomputer, a signal transmission module and an execution module. The touch switch module comprises a first touch switch and a second touch switch, one end of the first touch switch and one end of the second touch switch are connected with different single-chip microcomputer input pins respectively, the other end of the first touch switch and the other end of the second touch switch are grounded, when the touch force reaches a first threshold value, the first touch switch is connected, and the second touch switch is connected. When the touch force reaches a second threshold value, the second touch switch is switched on; the output end of the single-chip microcomputer is connected with the signal transmission module, and the signal transmission module is connected with the execution module. The single chip microcomputer outputs an amplified level signal to the signal transmission module according to the input level signal; and the signal transmission module transmits the level signal to the execution module to execute corresponding operation. The touch screen has the advantages that mistaken touch and direct operation of a user can be separated, and user experience is improved.

Description

Technical Field

[0001] The utility model relates to the field of circuits, and in particular to a touch control accuracy compensation circuit. Background Art

[0002] Touch sensors are widely used in consumer electronics, industrial automation equipment and other fields. Due to factors such as environmental conditions and material properties, corresponding errors will be caused.

[0003] Existing sensor circuits usually consist of a sensor interface and a signal processing part. The sensor interface is responsible for receiving the signal from the touch sensor and passing it to the signal processing part. However, the existing signal processing part only amplifies the signal without any other response mechanism, and cannot distinguish whether the touch is an accidental touch or an operational touch. Utility Model Content

[0004] The main purpose of the utility model is to provide a touch control accuracy compensation circuit, which aims to solve the problem that the existing signal processing part only amplifies the signal without other response mechanisms and cannot distinguish whether the touch is an accidental touch or an operational touch.

[0005] The utility model provides a touch control accuracy compensation circuit, comprising:

[0006] Touch switch module, single chip microcomputer, signal transmission module, execution module;

[0007] The touch switch module includes a first touch switch and a second touch switch, one end of the first touch switch and the second touch switch are respectively connected to different single-chip microcomputer input pins, and the other end of the first touch switch and the second touch switch are grounded. When the touch force reaches a first threshold, the first touch switch is connected, and when the touch force reaches a second threshold, the second touch switch is connected;

[0008] The output end of the single chip microcomputer is connected to the signal transmission module, and the signal transmission module is connected to the execution module;

[0009] The single chip microcomputer outputs an amplified level signal to the signal transmission module according to the input level signal;

[0010] The signal transmission module transmits the level signal to the execution module to execute the corresponding operation.

[0011] Furthermore, it also includes a single-chip microcomputer power supply module, which is connected to the single-chip microcomputer and is used to supply power to the single-chip microcomputer.

[0012] Furthermore, the signal transmission module includes a first circuit and a second circuit, the execution module includes a third circuit and a fourth circuit, a diode is provided on the first circuit, a cathode of the diode is connected to the output end of the single-chip microcomputer, and an anode of the diode is connected to the third circuit, one end of the second circuit is connected to the output end of the single-chip microcomputer, and an anode of the diode is connected to the fourth circuit, wherein the third circuit and the fourth circuit represent different execution signals.

[0013] Furthermore, the power supply module also includes a power supply capacitor, one end of the power supply capacitor is connected to the positive electrode of the single-chip microcomputer, the negative electrode of the single-chip microcomputer is grounded, and the other end of the power supply capacitor is grounded.

[0014] Furthermore, the signal transmission module further includes a diode capacitor, a first resistor and a second resistor;

[0015] The output pin of the single chip microcomputer is connected to the cathode end of the diode through the second resistor;

[0016] The first end of the first resistor is connected to the output pin of the single chip computer, the second end of the first resistor is grounded, the first end of the diode capacitor is connected to the cathode end of the diode, and the second end of the diode capacitor is grounded.

[0017] Furthermore, the third circuit includes a transistor, a control end of the transistor is connected to the anode end of the diode, an input end of the transistor is connected to the execution end, and an output end of the transistor is grounded.

[0018] Further, the fourth circuit includes a control module and a third resistor, the control module is connected to the second circuit, and the control module is connected in series with the third resistor;

[0019] When the second circuit transmits an electrical signal to the control module, the control module controls the circuit where the control module and the third resistor are connected in series to be connected.

[0020] The beneficial effects of the utility model are as follows: by setting a touch switch module, a single-chip microcomputer, a signal transmission module and an execution module, the corresponding circuit can be turned on according to the contact force of the touch switch, so that the execution module performs the corresponding operation, thereby separating the user's accidental touch and direct operation, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The present invention is a circuit diagram of a touch control accuracy compensation circuit according to an embodiment of the present invention.

[0022] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0025] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there may be three relationships. For example, A and B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone.

[0026] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their 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 addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0027] Reference Figure 1 The utility model proposes a touch control accuracy compensation circuit, comprising:

[0028] Touch switch module 10, single chip microcomputer U1, signal transmission module 30, execution module 40;

[0029] The touch switch module 10 includes a first touch switch S1 and a second touch switch S2, one end of the first touch switch S1 and the second touch switch S2 are respectively connected to different single-chip computer U1 input pins, and the other end of the first touch switch S1 and the second touch switch S2 are grounded. When the touch force reaches a first threshold, the first touch switch S1 is connected, and when the touch force reaches a second threshold, the second touch switch S2 is connected;

[0030] The output end of the single chip microcomputer U1 is connected to the signal transmission module 30 , and the signal transmission module 30 is connected to the execution module 40 .

[0031] The single chip microcomputer U1 outputs an amplified level signal to the signal transmission module 30 according to the input level signal;

[0032] The signal transmission module 30 transmits the level signal to the execution module 40 to execute the corresponding operation.

[0033] In this embodiment, by setting multiple thresholds, the single-chip computer U1 outputs according to the input level signal, wherein, when the circuit where the first touch switch S1 is located is turned on and the circuit where the second touch switch S2 is located is not turned on, the single-chip computer U1 will output a low-level signal, and when the circuit where the first touch switch S1 is located is turned on and the circuit where the second touch switch S2 is located is turned on, the single-chip computer U1 will output a high-level signal, and the first threshold is less than the second threshold, so that the execution module 40 can perform different operations according to the output circuit signal. Specifically, if the user touches by mistake (that is, the circuit where the first touch switch S1 is located is turned on and the circuit where the second touch switch S2 is located is not turned on), the user can be asked for confirmation, and if the user performs an operation (that is, the circuit where the first touch switch S1 is located is turned on and the circuit where the second touch switch S2 is located is turned on), the user's operation is directly executed. In this way, the user's mistaken touch and direct operation can be separated, and the user experience is improved.

[0034] In one embodiment, it further includes a single-chip microcomputer power supply module 20, which is connected to the single-chip microcomputer U1 and is used to supply power to the single-chip microcomputer U1. In some embodiments, the power supply can also be supplied by the power supply of the main device.

[0035] In one embodiment, the power supply module further includes a power supply capacitor C1, one end of the power supply capacitor C1 is connected to the positive electrode of the single-chip computer U1, the negative electrode of the single-chip computer U1 is grounded, and the other end of the power supply capacitor C1 is grounded.

[0036] In some embodiments, the signal transmission module 30 includes a first circuit and a second circuit, and the execution module 40 includes a third circuit and a fourth circuit. A diode D1 is provided on the first circuit, and the cathode of the diode D1 is connected to the output end of the single-chip computer U1, and the anode of the diode D1 is connected to the third circuit. One end of the second circuit is connected to the output end of the single-chip computer U1, and the anode of the diode D1 is connected to the fourth circuit, wherein the third circuit and the fourth circuit represent different execution signals. Among them, the high-level output can break through the diode D1, and the low-level output does not break through the diode D1. In other words, if the single-chip computer U1 outputs a high level, the first circuit and the second circuit are both passages, and if the single-chip computer U1 outputs a low level, only the second circuit is a passage.

[0037] In one embodiment, the signal transmission module 30 further includes a diode capacitor C2, a first resistor R1 and a second resistor;

[0038] The output pin of the single chip computer U1 is connected to the cathode end of the diode D1 through the second resistor;

[0039] The first end of the first resistor R1 is connected to the output pin of the single chip computer U1, the second end of the first resistor R1 is grounded, the first end of the diode capacitor C2 is connected to the cathode end of the diode D1, and the second end of the diode capacitor C2 is grounded.

[0040] In this embodiment, since the voltage across the diode capacitor C2 cannot change suddenly, the diode D1 will be turned on only when the voltage across the capacitor reaches the breakdown voltage of the diode D1. When the breakdown voltage of the diode D1 is not reached, it is generally considered that the diode D1 is not turned on. The first resistor R1 is used to release the charge in the diode capacitor C2 when the diode D1 is not turned on.

[0041] In one embodiment, the third circuit includes a transistor Q1, a control end of the transistor Q1 is connected to an anode end of the diode D1, an input end of the transistor Q1 is connected to an execution end, and an output end of the transistor Q1 is grounded. When the diode D1 is a passage, the transistor Q1 is turned on, at which time, the transistor Q1 is turned on, and then the third circuit is turned on, and the corresponding execution operation can be performed after the third circuit is turned on.

[0042] In one embodiment, the fourth circuit includes a control module and a third resistor, the control module is connected to the second circuit, and the control module is connected in series with the third resistor;

[0043] When the second circuit transmits an electrical signal to the control module, the control module controls the circuit where the control module and the third resistor are connected in series to be connected.

[0044] If the transistor Q1 is not turned on, the control module can turn on the fourth circuit according to the transmitted electrical signal. The control module can specifically be an IGBT (insulated gate bipolar transistor). If the transistor Q1 is a passage, the transmitted electrical signal is not sufficient to turn on the control module, and the fourth circuit is not turned on.

[0045] The beneficial effects of the utility model are as follows: by setting the touch switch module 10, the single-chip computer U1, the signal transmission module 30 and the execution module 40, the corresponding circuits can be turned on according to the contact force of the touch switch, so that the execution module 40 performs the corresponding operations, thereby separating the user's accidental touch and direct operation, and improving the user experience.

[0046] The above description is only the preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the scope of the claims of the utility model.

Claims

1. A touch control accuracy compensation circuit, characterized in that: include: Touch switch module, single chip microcomputer, signal transmission module, execution module; The touch switch module includes a first touch switch and a second touch switch, one end of the first touch switch and the second touch switch are respectively connected to different single-chip microcomputer input pins, and the other end of the first touch switch and the second touch switch are grounded. When the touch force reaches a first threshold, the first touch switch is connected, and when the touch force reaches a second threshold, the second touch switch is connected; The output end of the single chip microcomputer is connected to the signal transmission module, and the signal transmission module is connected to the execution module; The single chip microcomputer outputs an amplified level signal to the signal transmission module according to the input level signal; The signal transmission module transmits the level signal to the execution module to execute the corresponding operation.

2. The touch control accuracy compensation circuit according to claim 1, characterized in that: It also includes a single-chip microcomputer power supply module, which is connected to the single-chip microcomputer and is used to supply power to the single-chip microcomputer.

3. The touch control accuracy compensation circuit according to claim 1, characterized in that: The signal transmission module includes a first circuit and a second circuit, and the execution module includes a third circuit and a fourth circuit. A diode is provided on the first circuit, the cathode of the diode is connected to the output end of the single-chip computer, and the anode of the diode is connected to the third circuit. One end of the second circuit is connected to the output end of the single-chip computer, and the anode of the diode is connected to the fourth circuit, wherein the third circuit and the fourth circuit represent different execution signals.

4. The touch control accuracy compensation circuit according to claim 2, characterized in that: The power supply module further includes a power supply capacitor, one end of which is connected to the positive electrode of the single-chip microcomputer, the negative electrode of the single-chip microcomputer is grounded, and the other end of the power supply capacitor is grounded.

5. The touch control accuracy compensation circuit according to claim 1, characterized in that: The signal transmission module further includes a diode capacitor, a first resistor and a second resistor; The output pin of the single chip microcomputer is connected to the cathode end of the diode through the second resistor; The first end of the first resistor is connected to the output pin of the single chip computer, the second end of the first resistor is grounded, the first end of the diode capacitor is connected to the cathode end of the diode, and the second end of the diode capacitor is grounded.

6. The touch control accuracy compensation circuit according to claim 3, characterized in that: The third circuit includes a transistor, a control end of the transistor is connected to the anode end of the diode, an input end of the transistor is connected to the execution end, and an output end of the transistor is grounded.

7. The touch control accuracy compensation circuit according to claim 3, characterized in that: The fourth circuit includes a control module and a third resistor, the control module is connected to the second circuit, and the control module is connected in series with the third resistor; When the second circuit transmits an electrical signal to the control module, the control module controls the circuit where the control module and the third resistor are connected in series to be connected.

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