Controller with touch buttons

Abstract

The present invention discloses a controller with touch buttons, including a housing, a main control circuit and a control interface circuit are arranged in the housing; a touch button and a display screen are arranged on the housing, and the touch button and the display screen are respectively connected to the main control circuit; the main control circuit includes a touch detection circuit, a display circuit and a main control MCU, and the touch detection circuit and the display circuit are respectively connected to the touch button and the display screen, and the touch detection circuit is used to jointly determine the waveform of the output signal with the touch button and feed back a corresponding waveform signal to the main control MCU, and the main control MCU judges the function of the touch button according to the signal waveform to adjust the function parameters, and adjusts the display parameters of the display screen at the same time. The controller with touch buttons can be made of glass and other materials for the protection panel, and can realize the touch function under the condition of isolation protection of these media, and has the advantages of convenient operation, safety and reliability, long service life, waterproof, anti-oil and the like. The present invention also discloses an operation method of the controller.

Description

Technical Field

[0001] The invention relates to a controller, in particular to a controller with touch buttons. Background Art

[0002] At present, the artificial intelligence controllers and thermostats on the market all use LED or LCD display, and the panel uses 0.1~0.5mm PC or PET material as a protective panel. The toughness of the panel is used to touch the mechanical touch button inside the circuit to realize the setting operation of the instrument. Since the mechanical touch button has a mechanical life, a short service life, and is not waterproof, it is afraid of oil and acidic and alkaline gases. The pressure of the finger and the elastic force of the touch button can easily cause the panel to break. In addition, the use of mechanical buttons for temperature adjustment has low sensitivity, is not waterproof, has low anti-interference ability, and is easily damaged by repeated use, which will affect the performance of the whole machine and is not intelligent enough. Therefore, how to design a thermostat with touch buttons is still a technical problem to be solved. Summary of the invention

[0003] The object of the present invention is to provide a controller with touch buttons.

[0004] According to one aspect of the present invention, there is provided a controller with touch buttons, comprising a housing, a main control circuit and a control interface circuit are arranged in the housing, the input ends of the control interface circuit are respectively connected to the sensors, and the output ends of the control interface circuit are connected to the main control circuit;

[0005] The housing is provided with touch buttons and a display screen, which are respectively connected to the main control circuit;

[0006] The main control circuit includes a touch detection circuit, a display circuit and a main control MCU. The touch detection circuit and the display circuit are connected to the touch button and the display screen respectively. The touch detection circuit is used to determine the waveform of the output signal together with the touch button. When there is no touch action, the touch detection circuit outputs a high impedance. When a touch button is pressed, the touch detection circuit outputs a corresponding waveform, so that the waveform can simulate the state of a mechanical button when it is pressed, thereby simulating the same function of a mechanical button;

[0007] When the touch detection circuit receives a touch signal, it feeds back a corresponding waveform signal to the main control MCU. The main control MCU determines the function of the touch button according to the signal waveform and adjusts the functional parameters. At the same time, it adjusts the display parameters of the display screen through the display circuit.

[0008] In some embodiments, each time a touch button is touched, the touch detection circuit gives a signal. When the touch button is pressed and held, the touch detection circuit continuously outputs signals to the main control MCU. The main control MCU adjusts the corresponding functional parameters and display parameters of the display screen according to the length of time the signal is received.

[0009] In some embodiments, the touch keys include a touch increase key, a touch decrease key, a programming touch key, and a touch setting key, and the touch increase key, the touch decrease key, the programming touch key, and the touch setting key are respectively connected to the touch detection circuit.

[0010] In some embodiments, the touch detection circuit is mainly constructed by an IC-SOP16 integrated chip, which is used to simulate a mechanical key, and the 10th, 11th, 12th and 13th pins of the IC-SOP16 integrated chip are respectively connected to the up touch key, the down touch key, the programming touch key and the setting touch key, and together with the four touch keys, determine the output waveform;

[0011] When there is no touch action, the second pin of the IC-SOP16 integrated chip simulates the common end of the mechanical key and the output is high impedance. When a touch key is pressed, the 5th, 6th, 7th and 8th pins of the IC-SOP16 integrated chip output waveforms corresponding to the 10th, 11th, 12th and 13th pins of the IC-SOP16 integrated chip, so that the waveform can simulate the state when the mechanical key is pressed, thereby simulating the same function of the mechanical key.

[0012] In some embodiments, the touch detection circuit also includes a shift register constructed by a 74HC164D integrated chip, and the 5th, 6th, 7th and 8th pins of the IC-SOP16 integrated chip are correspondingly connected to the 6th, 5th, 4th and 3rd pins of the 74HC164D integrated chip, and are connected to four transistors at the same time. The signal waveform is output from the 1st, 2nd and 8th pins of the 74HC164D integrated chip and input to the main control MCU. The main control MCU realizes integrated control of the display value and functional parameters by scanning.

[0013] In some embodiments, current limiting resistors are provided between the 5th, 6th, 7th and 8th pins of the IC-SOP16 integrated chip and the 6th, 5th, 4th and 3rd pins of the 74HC164D integrated chip, respectively, and the resistance of the current limiting resistors can be adjusted to adjust the sensitivity of the touch keys.

[0014] In some embodiments, a light column display system is also included. The light column display system includes a group of LED light sources arranged on the shell and a light column display circuit arranged inside the shell. The LED light sources are respectively connected to the light column display circuit. The light column display system displays the progress parameter or the proportion parameter by the on and off state of the LED light sources.

[0015] In some embodiments, the light column display circuit is mainly constructed by an IC-SOP20 integrated chip, wherein the 6th, 8th, 9th and 11th pins of the IC-SOP20 integrated chip are respectively connected to an LED light source through a current limiting resistor, and the four LED light sources are arranged in a row or a column, and the resistance value of the current limiting resistor connected to the LED light source from one end to the other end increases or decreases sequentially.

[0016] According to another aspect of the present invention, there is also provided a method for adjusting function parameters of a controller with touch buttons, comprising:

[0017] A. Press and hold the setting touch button for more than 2 seconds to enter the function menu. Each press will enter the next level menu;

[0018] B. Touch the Increase button to increase the value of the menu. Each touch will increase the value by one. Press and hold the Increase button to increase the value quickly.

[0019] C. Touch the down touch button to decrease the value. Each time you touch it, the value will decrease by one. Press and hold the down touch button to quickly decrease the value.

[0020] D. Touch the programming touch button once to move the DP light of the LED digital tube as the display screen, which is used as the decimal point of the parameter setting, from right to left. The values ​​correspond to: units, tens, hundreds, and thousands. This function can also quickly increase or decrease the value in conjunction with the increase touch button and the decrease touch button. Press and hold the programming touch button to return to the previous menu. If you press and hold the programming touch button and touch the setting touch button at the same time, you will exit the menu and return to the initial state.

[0021] The controller with touch buttons adopting the above technical solution can use (glass, acrylic, plastic, ceramic and other materials) for the protection panel. Under the condition of isolation and protection of these media, the touch function can be realized, and it has the advantages of convenient operation, safety and reliability, long service life, waterproof, anti-oil and acidic and alkaline gas, etc. The thickness of the touch medium material can be selected arbitrarily from 0.1 to 10 mm.

[0022] By adopting the above technical solution, the controller with touch buttons also has the following beneficial effects:

[0023] 1) Touch integrated, easy to use;

[0024] 2) Support combination key function;

[0025] 3) Automatically detect external factors and capacitance values ​​of different human bodies;

[0026] 4) The algorithm parameters are adjustable to adapt to different button forms and panel (medium) materials;

[0027] 5) Long service life, reaching 10 to the 13th power under continuous working condition. Mechanical buttons are 10 to the 6th power;

[0028] 6) It is resistant to acid, alkali and other corrosive gases. It will not cause poor contact and operation failure due to environmental factors, just like mechanical buttons. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The figure is a schematic diagram of the structure of a controller with touch buttons according to an embodiment of the present invention.

[0030] Figure 2 for Figure 1 The controller circuit diagram with touch buttons is shown. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0032] Figure 1 and Figure 2 A controller with touch buttons according to an embodiment of the present invention is schematically shown.

[0033] like Figure 1 As shown, the device comprises a housing 1, in which a main control circuit and a control interface circuit are arranged.

[0034] The input ends of the control interface circuit are respectively connected to the sensors, and the output ends of the control interface circuit are connected to the main control circuit.

[0035] The housing 1 is provided with touch buttons 2 and a display screen 3 .

[0036] The touch button 2 and the display screen 3 are respectively connected to the main control circuit;

[0037] Among them, the main control circuit includes a touch detection circuit, a display circuit and a main control MCU.

[0038] The touch detection circuit and the display circuit are connected to the touch button 2 and the display screen 3 respectively.

[0039] The touch detection circuit is used to determine the waveform of the output signal together with the touch button 2.

[0040] When there is no touch action, the touch detection circuit output is high impedance;

[0041] When touch button 2 is pressed, the touch detection circuit outputs the corresponding waveform;

[0042] This waveform can simulate the state of a mechanical key when it is pressed, thereby simulating the same function of the mechanical key.

[0043] When the touch detection circuit receives a touch signal, it feeds back a corresponding waveform signal to the main control MCU. The main control MCU determines the function of the touch button 2 according to the signal waveform and adjusts the functional parameters. At the same time, it adjusts the display parameters of the display screen 3 through the display circuit.

[0044] Each time the touch button 2 is touched, the touch detection circuit gives a signal. When the touch button 2 is pressed and held, the touch detection circuit continuously outputs signals to the main control MCU. The main control MCU adjusts the corresponding functional parameters and the display parameters of the display screen 3 according to the length of time the signal is received.

[0045] In this embodiment, a light bar display system is also included.

[0046] The light bar display system comprises a group of LED light sources 4 arranged on the housing 1 and a light bar display circuit arranged inside the housing 1 .

[0047] The LED light sources 4 are respectively connected to the light column display circuits, and the light column display system displays the progress parameter or the proportion parameter according to the on and off status of the LED light sources 4 .

[0048] like Figure 2 As shown, the touch keys include an increase touch key S4, a decrease touch key S3, a programming touch key S2 and a setting touch key S1.

[0049] The heightening touch button S4, the heightening touch button S3, the programming touch button S2 and the setting touch button S1 are respectively connected to the touch detection circuit.

[0050] The touch detection circuit is mainly constructed by an IC-SOP16 integrated chip, which is used to simulate mechanical buttons. The 10th, 11th, 12th and 13th pins (compatible with TTL level) of the IC-SOP16 integrated chip are respectively connected to the high touch button S4, the low touch button S3, the programming touch button S2 and the setting touch button S1, as the input pins of the touch signal and together with the four touch buttons determine the output CMOS output) waveform;

[0051] When there is no touch action, the second pin of the IC-SOP16 integrated chip simulates the common end of the mechanical key and the output is high impedance. When a touch key is pressed, the 5th, 6th, 7th and 8th pins of the IC-SOP16 integrated chip output waveforms corresponding to the 10th, 11th, 12th and 13th pins of the IC-SOP16 integrated chip, so that the waveform can simulate the state when the mechanical key is pressed, thereby simulating the same function of the mechanical key.

[0052] The touch detection circuit also includes a shift register constructed by a 74HC164D integrated chip.

[0053] The 5th, 6th, 7th and 8th pins of the IC-SOP16 integrated chip are connected to the 6th, 5th, 4th and 3rd pins of the 74HC164D integrated chip respectively, and are connected to four transistors (T5, T6, T7, T8) at the same time. The signal waveform is output from the 1st, 2nd and 8th pins of the 74HC164D integrated chip to the main control MCU. The main control MCU realizes the integrated control of the displayed value and functional parameters by scanning.

[0054] Current limiting resistors (R13, R14, R15, R16) are respectively provided between the 5th, 6th, 7th and 8th pins of the IC-SOP16 integrated chip and the 6th, 5th, 4th and 3rd pins of the 74HC164D integrated chip. The resistance values ​​of the current limiting resistors (R13, R14, R15, R16) can be adjusted to thereby adjust the sensitivity of the corresponding touch keys.

[0055] The light column display circuit is mainly constructed by an IC-SOP20 integrated chip, wherein the 6th, 8th, 9th and 11th pins of the IC-SOP20 integrated chip are respectively connected to an LED light source through a current limiting resistor (R23, R24, R25, R26), and the four LED light sources are arranged in a row or a column, and the resistance values ​​of the current limiting resistors (R23, R24, R25, R26) connected to the LED light sources from one end to the other end increase or decrease in sequence.

[0056] The working principle of touch button 2 is:

[0057] 1) Control the charge transfer speed by selecting the frequency;

[0058] 2) Control the charge transfer target by selecting the voltage reference;

[0059] 3) By charging the selected key channel;

[0060] 4) The button lights up and charges to the capacitor port;

[0061] 5) When the level reaches the selected voltage reference, the touch conversion ends;

[0062] 6) Count the time used for this transfer through a timer;

[0063] 7) By using the change of time quantity to process the function algorithm, key judgment and filtering can be realized;

[0064] 8) For touch-sensitive buttons, the metal sensing part in the circuit is a conductor of the capacitor, the human finger constitutes another conductor, and an insulator (medium) is sandwiched between the two conductors to form a capacitor. When there is no human finger touching, there is only capacitance in the circuit. When there is a touch, the button forms a capacitance value through the human finger. The change in capacitance value causes the change in the oscillation frequency or charge and discharge time inside the touch IC, so that the IC can detect the occurrence of touch, generate a trigger signal, and combine with the main microcontroller program to meet the functional technical requirements.

[0065] The function parameter adjustment method corresponding to the controller with touch buttons is:

[0066] A. Press and hold the setting touch button S for more than 12 seconds to enter the function menu. Each press will enter the next level menu.

[0067] B. Touch the S4 button to increase the value of the menu. Each touch will increase the value. Press and hold the S4 button to increase the value quickly.

[0068] C. Touch the down touch button S3 to decrease the value. Each time you touch it, the value will decrease by one. Press and hold the down touch button S3 to quickly decrease the value.

[0069] D. Touch the programming touch button S2 once to move the DP light of the LED digital tube as the display screen, which serves as the decimal point for parameter settings, from right to left. The values ​​correspond to: units, tens, hundreds, and thousands. This function can also quickly increase or decrease the value in conjunction with the increase touch button S4 and the decrease touch button S3. Press and hold the programming touch button S2 to return to the previous menu. If you press and hold the programming touch button S2 and touch the setting touch button S1 at the same time, you will exit the menu and return to the initial state.

[0070] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A controller with touch buttons, characterized in that: Comprising a housing, wherein a main control circuit and a control interface circuit are provided in the housing, wherein the input ends of the control interface circuit are respectively connected to sensors, and the output ends of the control interface circuit are connected to the main control circuit; The housing is provided with a touch button and a display screen, and the touch button and the display screen are respectively connected to the main control circuit; The main control circuit includes a touch detection circuit, a display circuit and a main control MCU. The touch detection circuit and the display circuit are connected to the touch button and the display screen respectively. The touch detection circuit is used to determine the waveform of the output signal together with the touch button. When there is no touch action, the touch detection circuit outputs a high impedance. When the touch button is pressed, the touch detection circuit outputs a corresponding waveform, so that the waveform can simulate the state of a mechanical button when it is pressed, thereby simulating the same function of a mechanical button; When the touch detection circuit receives a touch signal, a corresponding waveform signal is fed back to the main control MCU, and the main control MCU determines the function of the touch button according to the signal waveform and adjusts the function parameters, and at the same time adjusts the display parameters of the display screen through the display circuit; Each time the touch key is touched, the touch detection circuit gives a signal; By pressing and holding the touch button, the touch detection circuit continuously outputs signals to the main control MCU, and the main control MCU adjusts the corresponding function parameters and the display parameters of the display screen according to the duration of the received signal; The touch keys include an increase touch key, a decrease touch key, a programming touch key and a setting touch key, and the increase touch key, the decrease touch key, the programming touch key and the setting touch key are respectively connected to the touch detection circuit; The touch detection circuit is mainly constructed by an IC-SOP16 integrated chip, which is used to simulate mechanical buttons. The 10th, 11th, 12th and 13th pins of the IC-SOP16 integrated chip are respectively connected to the increase touch button, the decrease touch button, the programming touch button and the setting touch button, and together with the four touch buttons, determine the output waveform; When there is no touch action, the second pin of the IC-SOP16 integrated chip simulates the common end of the mechanical key and the output is high impedance. When the touch key is pressed, the 5th, 6th, 7th and 8th pins of the IC-SOP16 integrated chip output waveforms corresponding to the 10th, 11th, 12th and 13th pins of the IC-SOP16 integrated chip, so that the waveform can simulate the state when the mechanical key is pressed, thereby simulating the same function of the mechanical key; The touch detection circuit also includes a shift register constructed by a 74HC164D integrated chip, the 5th, 6th, 7th and 8th pins of the IC-SOP16 integrated chip are correspondingly connected to the 6th, 5th, 4th and 3rd pins of the 74HC164D integrated chip, and are connected to four transistors at the same time, and the signal waveform is output from the 1st, 2nd and 8th pins of the 74HC164D integrated chip to the main control MCU, and the main control MCU realizes the integrated control of the display value and the function parameter by scanning; Current limiting resistors are provided between the 5th, 6th, 7th and 8th pins of the IC-SOP16 integrated chip and the 6th, 5th, 4th and 3rd pins of the 74HC164D integrated chip, respectively. The resistance of the current limiting resistors can be adjusted to thereby adjust the sensitivity of the touch keys.

2. The controller with touch buttons according to claim 1, characterized in that: It also includes a light column display system, which includes a group of LED light sources arranged on the shell and a light column display circuit arranged inside the shell, the LED light sources are respectively connected to the light column display circuits, and the light column display system displays the progress parameter or the proportion parameter according to the on and off state of the LED light sources.

3. The controller with touch buttons according to claim 2, characterized in that: The light column display circuit is mainly constructed by an IC-SOP20 integrated chip, wherein the 6th, 8th, 9th and 11th pins of the IC-SOP20 integrated chip are respectively connected to one of the LED light sources through a current limiting resistor, the four LED light sources are arranged in a row or a column, and the resistance values ​​of the current limiting resistors connected to the LED light sources from one end to the other end increase or decrease in sequence.

4. The method for adjusting function parameters of a controller with touch buttons according to claim 1, characterized in that: include: A. Press and hold the setting touch button for more than 2 seconds to enter the function menu. Each press will enter the next level menu; B. Touch the increase touch button to increase the value of the menu. Each touch increases the value by one. Press and hold the increase touch button to quickly increase the value. C. Touch the down touch button to decrease the value. Each time you touch it, the value decreases by one. Press and hold the down touch button to quickly decrease the value. D. Touch the programming touch button once to move the DP light of the LED digital tube as the display screen, which serves as the decimal point for parameter settings, from right to left. The values ​​correspond to: units, tens, hundreds, and thousands. This function can be used in conjunction with the increase touch button and the decrease touch button to quickly increase or decrease the value. Press and hold the programming touch button to return to the previous menu. If you press and hold the programming touch button and touch the setting touch button at the same time, you will exit the menu and return to the initial state.

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