CN219800131U - Adjusting circuit based on capacitive screen touch control - Google Patents
Adjusting circuit based on capacitive screen touch control Download PDFInfo
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- CN219800131U CN219800131U CN202320930482.5U CN202320930482U CN219800131U CN 219800131 U CN219800131 U CN 219800131U CN 202320930482 U CN202320930482 U CN 202320930482U CN 219800131 U CN219800131 U CN 219800131U
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- 238000012544 monitoring process Methods 0.000 claims abstract description 53
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 39
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 18
- 239000003990 capacitor Substances 0.000 claims description 35
- 230000002159 abnormal effect Effects 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000008859 change Effects 0.000 description 8
- 230000008878 coupling Effects 0.000 description 8
- 238000010168 coupling process Methods 0.000 description 8
- 238000005859 coupling reaction Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
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Abstract
The utility model discloses an adjusting circuit based on capacitive screen touch control, which comprises: the adjusting circuit includes: the device comprises a power supply, a main control board, a driving board, a monitoring board chip and a touch control board chip; according to the capacitance screen touch control-based adjusting circuit, after the main control board is connected with the power supply, different voltages are reasonably distributed to each component so as to drive the detection board chip, the driving board and the touch control board chip to operate, one end of the touch board is connected with the collector, meanwhile, the collector sends touch electric signals from one end of the monitoring board to one end of the driving board, so that the liquid crystal display displays in real time, the voltage stabilizing circuit is arranged between the driving board and the monitoring board, a user can stably and efficiently display the current operation instruction of the user on the liquid crystal display in real time after inputting the touch signal instruction to the collector, the phenomenon that the current of the display is unstable after the user touches the collector is prevented, and abnormal display is indirectly caused, and the stability of the circuit when the touch electric signals are transmitted is guaranteed.
Description
Technical Field
The utility model relates to the technical field of packaging boxes, in particular to an adjusting circuit based on capacitive screen touch control.
Background
Along with the continuous increase of the use amount of touch display screen in families or offices, people's requirement on the touch sensitivity of touch display screen is higher and higher, the current market lacks a device that touch sensitivity is higher, because current touch pad is directly connected by 12V voltage is direct when carrying out the electricity connection, voltage between power and the components and parts is higher, thereby the touch failure when leading to touch pad device to carry out the electricity connection, the actual experience of user is influenced in the use that the touch effect is relatively poor, unable accurate demonstration on the LCD screen after the capacitive screen touches, make the holistic use efficiency of touch pad and LCD screen not high, present equipment is along with the increase of touching number of times, the signal that the touch pad was transmitting to the LCD screen is unstable, and then the phenomenon of jump point appears to the screen, transmission efficiency reduces thereupon, current touch display screen has the problem of touch efficiency not high.
Disclosure of Invention
The utility model discloses an adjusting circuit based on capacitive screen touch, which aims to solve the problem that in the prior art, the capacitive screen touch is abnormal and the display of a liquid crystal screen is wrong.
An adjusting circuit based on capacitive screen touch control, wherein the adjusting circuit comprises: the adjusting circuit includes: the device comprises a power supply, a main control board, a driving board, a monitoring board chip and a touch control board chip.
And a voltage stabilizing circuit is further arranged between the monitoring board chip and the driving board.
The first connecting end of main control board is connected the first connecting end of drive plate, the second connecting end of drive plate is connected the first end of monitoring board chip, the second connecting end of monitoring board chip is connected the second connecting end of main control board, the third connecting end of main control board is connected the one end of touch-control board chip, the other end of touch-control board chip is connected the third connecting end of monitoring board chip.
The touch control plate chip is connected with a collector, and a signal receiving end of the touch control plate chip receives the touch signal sent by the collector.
The third connecting end of the driving plate is connected with the liquid crystal display to drive the liquid crystal display to display.
An adjusting circuit based on capacitive screen touch control, wherein the voltage stabilizing circuit comprises: a first resistor, a second resistor, and a capacitor;
the voltage input end of the driving plate is connected with one end of the first resistor, the output end of the monitoring plate is simultaneously connected with the other end of the first resistor, one end of the second resistor, one end of the capacitor and the output end of the main control plate, the other end of the second resistor is grounded, and the other end of the capacitor is grounded.
An adjusting circuit based on capacitive screen touch control, wherein the input voltage of the voltage input end of the driving plate is 12V.
An adjusting circuit based on capacitive screen touch control, wherein the output voltage of the output end of the main control board is 5V.
An adjusting circuit based on capacitive screen touch control, wherein the resistance value of the first resistor is 1.74KΩ.
An adjusting circuit based on capacitive screen touch, wherein the resistance value of the second resistor is 0.66KΩ, and the capacitance of the capacitor is 0.1uF.
An adjusting circuit based on capacitive screen touch control, wherein the output current of one end of the driving plate connected with the monitoring plate is 5mA.
An adjusting circuit based on capacitive screen touch control, wherein an automatic gain module is further connected between the touch control plate chip and the collector.
Compared with the prior art, the utility model has the following advantages:
according to the capacitance screen touch control-based adjusting circuit, after the main control board is connected with the power supply, different voltages are reasonably distributed to each component so as to drive the detection board chip, the driving board and the touch control board chip to operate, one end of the touch board is connected with the collector, the collector sends a user touch electric signal to the driving board through the monitoring board, and the voltage stabilizing circuit is arranged between the driving board and the monitoring board so that after the user inputs the touch signal to the collector, the touch signal transmitted by the driving board can be stably and efficiently displayed on the liquid crystal display in real time, abnormal display of the liquid crystal display caused by unstable current of the liquid crystal screen after the user touches the collector is prevented, the overall signal transmission efficiency of the circuit is improved, the stability of the circuit when the touch electric signal is transmitted is ensured, and the touch efficiency of the touch display screen in the use process is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a voltage stabilizing circuit based on capacitive screen touch control according to an embodiment of the present utility model;
fig. 2 is a schematic diagram of an adjustment circuit based on capacitive screen touch according to an embodiment of the present utility model.
The intelligent control device comprises a main control board P1, a driving board P2, a monitoring board chip M1, a touch control board chip M2, a first resistor R1, a second resistor R2, a capacitor C1, a power supply V, a collector TP, a first connecting end L1, a second connecting end L2 and an automatic gain module K1, wherein the first connecting end L1 is connected with the main control board, and the second connecting end L2 is connected with the monitoring board chip.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
In this embodiment, please refer to fig. 1 and 2, as shown in the drawings, which include: the adjusting circuit includes: the liquid crystal display device comprises a power supply V, a main control board P1, a driving board P2, a monitoring board chip M1 and a touch board chip M2, wherein a voltage stabilizing circuit is further arranged between the monitoring board chip M1 and the driving board P2, a first connecting end of the main control board P1 is connected with a first connecting end L1 of the driving board P2, a second connecting end of the driving board P2 is connected with the first end of the monitoring board chip M1, a second connecting end L2 of the main control board P1 is connected with a third connecting end of the main control board P1, one end of the touch board chip M2 is connected with a third connecting end of the monitoring board chip M1, the touch board chip M1 is connected with an acquisition device TP, a signal receiving end of the touch board chip M2 receives touch signals sent by the acquisition device TP, and the third connecting end of the driving board P2 is connected with a liquid crystal display (in a liquid crystal display map) to drive the liquid crystal display device.
Specifically, the main control board P1 is an android motherboard in this embodiment, after the complete machine provided with the android motherboard is powered on, the power panel supplies power to the android motherboard, components and parts of the motherboard step down to the monitor board M1, the touch panel is further step down by the monitor board M1, the 5V voltage of the power transmission by the android motherboard is supplied to the touch panel to control the touch panel to provide touch operation for a user, the voltage in the L2 (the voltage between the main control board and the monitor board chip is 5V), the android motherboard divides the power transmission voltage, and the 12V voltage generated after the division provides the driving board P2 to perform stable operation, so that the driving board P2 further controls the operation of the liquid crystal display.
Specifically, the collector in this scheme is TP (capacitive screen module), monitor board chip sends the instruction through the IO port and carries out the signal of telecommunication that gathers route TP (capacitive screen module) and carry out transmission to control touch control board chip M2, so that monitor board chip accuracy gathers the user touch information of the conversion of capacitive screen better convenient, can guarantee under this circumstances that the background value of gathering is in the controllable within range in individual circuit for touch control board chip M2 point of report calculates, avoids touch control board chip M2 to calculate the mistake, influences user's normal use.
Specifically, the three ports of the android motherboard simultaneously output voltages to the driving board P2, the monitoring board chip M1 and the touch board chip M2, and the divided voltages are different, the voltage distributed to the driving board P2 is 12V, the voltage distributed to the monitoring board chip M1 and the touch board chip M2 is 5V, and the main control board P1 simultaneously drives the touch board chip M2, the driving board P2 and the touch board chip M2 to operate, so that a liquid crystal screen connected with the driving board P2 and a collector (TP) connected with the touch board chip M2 can accurately display on the liquid crystal screen according to a command touched by a user, thereby improving the display stability of the liquid crystal screen.
Further, in the embodiment of the present disclosure, the driving board is electrically connected to the liquid crystal display to drive the liquid crystal display to open, so that the liquid crystal display directly forms a certain noise interference to the collector (capacitive screen module) after being manually opened, and the liquid crystal display is subjected to a coupling capacitor and a parasitic capacitor, which are set in the path display, of a current generated after being manually opened, so as to influence the stable collection operation of the collector (capacitive screen module) on the change of the own capacitive signal. In a specific implementation process, for example, in the case that other abnormal electrical signals interfere or a magnetic conductor contacts the collector (capacitive screen module), the magnetic conductor and the collector (capacitive screen module) can independently form new coupling current, so that the original capacitance signal value change of the collector (capacitive screen module) is affected, when a certain change is achieved, namely, the capacitive screen generates false touch, a voltage stabilizing circuit is additionally arranged between the monitoring board chip M1 and the driving board P2, the probability of false touch when the liquid crystal display is connected with the collector is indirectly reduced, and the display accuracy of the liquid crystal display is improved.
In the embodiment of the present disclosure, when the driving board P2, the monitoring board chip M1 and the touch board chip M2 are electrically connected to the main control board at the same time, the monitoring board chip M1 is configured to monitor the working state of the driving board P2 in real time, and trigger the touch board chip M2 to drive the collector TP to work. In a specific embodiment, when one end of the monitor board chip M1 is connected to the driving board through a wire equipped with an ADC (analog-to-digital converter), after detecting that the driving board is in a working state at the first time, the monitor board chip and an IO (electrical signal connection port) port between the control transformer chips issue a command to drive the touch board to start working, and the data acquisition and analysis processing are performed by the drive collector.
In this embodiment, please refer to fig. 1 and 2, as shown in the drawings, the voltage stabilizing circuit includes: a first resistor R1, a second resistor R2 and a capacitor C1;
the voltage input end of the driving plate is connected with one end of the first resistor R1, the output end of the monitoring plate is simultaneously connected with the other end of the first resistor R1, one end of the second resistor R2, one end of the capacitor C1 and the output end of the main control plate, the other end of the second resistor R2 is grounded, and the other end of the capacitor C1 is grounded.
Specifically, in one embodiment, the voltage stabilizing circuit connected with the adjusting circuit is provided with a plurality of resistors, when a user touches the touch panel chip M2, when receiving a touch electric signal of the user on the collector at present, the 5V voltage and the 12V voltage are transmitted to the corresponding driving panel P2 to drive the touch panel chip, when the driving panel P2 starts to work, an ADC (analog signal converter) wire is further assembled between the monitoring panel chip M1 and the driving panel P2, the monitoring of the analog signal converter connected with the monitoring panel M1 is performed by using the collected digital signal to provide a change of a high frequency (the voltage of 12V is divided into 3.3V by the resistor to be read by the collecting device) corresponding to the 12V voltage, when the main control panel P1 reads the high frequency of the 12V voltage position converted from the low frequency, the monitoring panel chip M1 sends an instruction to control the touch panel through the IO (electric signal connector) in the embodiment, the liquid crystal display device can be prevented from being influenced by the value of the liquid crystal display panel, and the error can be prevented from being displayed in the normal range of the touch panel, and the user can be prevented from being influenced by the value of the liquid crystal display.
Further, in another embodiment, the background value of the coupling capacitor in the present solution is an electrical signal value of the touch action of the user, when the monitor board provides corresponding voltages to the touch panel and the driving board respectively, the monitor board chip M1 synchronously detects the change of the power-on time of the corresponding driving board P2, if the power-on time sequence of the touch panel chip M2 is earlier than the power-on time sequence of the driving board P2, the touch panel is powered down, and after the driving board P2 is powered on, the touch panel is powered on again and the electrical signal of the touch action of the user is collected (the liquid crystal is turned on by the driving board, and at this time, the interference current of the liquid crystal display is in a stable state in the whole circuit); if the power-on time sequence of the touch control plate chip M2 is later than that of the driving plate, the coupling capacitance background value is normally collected, and after the voltage stabilizing circuit is additionally arranged, the display stability of the liquid crystal display is further improved.
In the present embodiment, please refer to fig. 1 and 2, wherein the input voltage of the voltage input terminal of the driving board P2 is 12V.
Specifically, when the driving board is assembled to operate, the voltage input end of the driving board P2 is consistent with the voltage output by the main control board P1, the voltage distributed to the driving board after the main control board P1 is electrically connected with the power supply V is high-frequency, the voltage at the connecting end of the main control board P1 and the driving board P2 is 12V, when the voltage at the connecting end is 12V, the voltage generated by dividing the voltage by the first resistor R1 is 3.3V, and the high voltage is not output at this time to discharge, the main control board P1 divides the voltage to the driving board to drive the driving board, and then the electric signal of the monitoring board chip M1 is matched to drive the display to perform efficient display. By the arrangement mode, the driving working efficiency of the driving plate P2 is further improved, and the driving control efficiency of the liquid crystal display is further improved.
The output voltage 12V standard voltage of the first connecting end L1, which is connected with the main control board, of the driving board is divided when passing through the first resistor R1, 3.3V after the division is combined with the voltage, which is distributed by the monitoring board chip M1, of the main control board P1 alone so that the monitoring board chip M1 normally operates, and the low voltage after the division of the voltage through a plurality of resistors in the voltage stabilizing circuit is 3.3V.
Further, the second connection end L2 electrically connected to the monitor board chip is in a state of 12V for the full load operating voltage normally set when electrically connected to the main board P1, in one embodiment, the maximum voltage that can be borne by the circuit in the adjusting circuit during the acquisition process of the ADC (analog signal converter) is 3.3V, the voltage of the electrical connection end of the first connection end L1 connected to the main board through the first resistor R1 and the second resistor R2 is 3.3V instead of 5V, when the electrical connection end of the first connection end L1 connected to the main board does not obtain 12V (i.e. 0V state), the acquisition voltage of the monitor board is 0V, the electric connection end of the second connection end L2 connected with the monitoring board chip is in a low level state of 0V, at the moment, the monitoring board chip M1 does not generate control instructions on the connection end IO of the touch board chip M2, if after the electric connection end of the first connection end L1 connected with the main control board and the driving board obtains 12V voltage, an ADC (analog signal converter) acquires 3.3V on a circuit obtained after the circuit passes through the resistance of the first resistor R1 and the resistance voltage division of the second resistor R2 and the second connection end L2 connected with the monitoring board chip is in a high level state, and then the monitoring board is triggered to send control instructions through an IO port, so that the touch board is driven to work.
In this embodiment, please refer to fig. 1 and fig. 2, as shown in the drawing, wherein the output voltage of the output end of the main control board P1 is 5V.
Specifically, the output voltage of the output end of the main control board P1 is 5V, and at this time, the main control board transmits 5V voltage towards the monitor board chip, and when the main control board is used in combination with the second resistor R2 and the capacitor, the liquid crystal display connected with the driving board is enabled to operate stably.
Furthermore, the voltage stabilizing circuit is used for stabilizing voltage in cooperation with the adjusting circuit, and reasonably distributing the voltage to protect the normal operation of each component of the adjusting circuit.
In this embodiment, referring to fig. 1, as shown in the drawing, the resistance of the first resistor R1 is 1.74kΩ.
Specifically, in the voltage stabilizing circuit equipped with the first resistor R1, the first resistor R1 is used for dividing the 12V voltage distributed by the main control board P1, converting the high frequency into the low frequency for the driving board to perform normal operation, and preventing the driving board and other components from being damaged due to excessive current.
In this embodiment, referring to fig. 1, as shown in the drawing, the resistance of the second resistor R2 is 0.66kΩ.
Specifically, in the voltage stabilizing circuit equipped with the second resistor R2, the second resistor R2 is used for dividing the voltage of the first resistor R1 and then grounding, so as to protect the normal circulation of the voltage and the current between the driving board P2 and the monitoring board chip M1, and convert the high frequency into the low frequency for the driving board to perform normal operation, thereby preventing the driving board and other components from being damaged by the overlarge current.
In this embodiment, please refer to fig. 1, as shown in the drawing, wherein the capacitor C1 is a filter capacitor;
the capacitance of the filter capacitor is 0.1uF.
Specifically, the capacitor in this embodiment is a filter capacitor, and the filter capacitor filters the ac with the electric signal, so as to provide the current with the stable electric signal after the user touches the capacitive screen, so as to reduce the wave frequency of the electric signal of the ac flowing into the monitor board chip M1 in this embodiment, prevent the electric signal from being disordered during transmission, and further improve the efficient and smooth dc output.
In this embodiment, referring to fig. 1, as shown in the drawing, the output current of one end of the driving board P2 connected to the monitor board chip M1 is 5mA.
Specifically, the voltage of the high voltage distributed to the driving board P2 by the main control board P1 after being divided is 3.3V, and is read by the acquisition device, and the current passing through the driving board P2 is 5mA, and the current is limited by the filtering capacitor through the divided high current path, so that in order to obtain a good filtering effect, the capacitor must be discharged slowly, the output voltage is smoother and the filtering effect is better. The discharging speed of the capacitor is related to the capacity C and the load R of the capacitor, the larger the capacity C and the load R are, the slower the discharging speed of the capacitor is, the filter capacitor in the embodiment of the scheme is a filter capacitor with large capacity, 0.1 uF=100 nF, the faster the discharging speed of the filter capacitor is, the smoother the control of the driving plate and the monitoring plate chip M1 is, the setting mode of adding the filter capacitor is further improved, the acquisition stability of the monitoring plate chip M1 is further improved, and therefore the liquid crystal screen accurately displays the execution operation related to the touch instruction of the current user when the user performs touch operation.
In this embodiment, referring to fig. 1, as shown in the drawing, an automatic gain module Z1 is further connected between the touch pad chip M2 and the collector TP.
Specifically, an automatic gain module Z1 is additionally installed between the touch pad chip M2 and the collector TP, after the touch pad chip M2 obtains the electrical signal data of the user touch signal collected by the collector TP through the lead of the ADC (analog signal converter) erected in the middle, the touch pad chip M2 analyzes the capacitance value data of the whole surface of the collector TP (capacitive screen module) collected back, if the current passing through the collector TP is too high or too low, the automatic gain module will reduce or improve the electrical signal change of the node data, so that the capacitance value data of the collector TP (capacitive screen module) tends to be gentle and stable. The data of TP (capacitive screen module) is formed by 126 driving channels and 224 receiving channels corresponding to each driving channel, and the capacitive value data nodes of 126 x 224 nodes formed by the driving channels are the whole data of the collector TP.
Two embodiments employed in the present utility model are: firstly, when a user uses the android device with the circuit, when the monitoring board chips respectively provide corresponding voltages to the touch control board and the T-CON board (the driving board in the embodiment of the scheme), the monitoring board synchronously detects the change of the energizing time sequence of the corresponding board, if the energizing time sequence of the touch control board is earlier than the energizing time sequence of the T-CON board, the energizing time sequence of the touch control board is pulled down, the energizing of the touch control board is recovered after the T-CON is energized, the coupling capacitance background value is acquired (the liquid crystal display is lightened after the T-CON is energized, and the interference alternating current of the liquid crystal display is in a stable state at the moment); if the power-on time sequence of the touch control panel is later than that of the T-CON panel, the coupling capacitance background value is normally collected.
Secondly, when the user uses the android device with the circuit, the touch control board collects the background value of the coupling capacitor (the electric signal value of the touch action of the user), when 5V voltage and 12V voltage are transmitted to the corresponding driving board and the monitoring board chip to work, the monitoring board is used for monitoring and collecting the high voltage (the 12V voltage is divided into 3.3V by the resistor for being read by the collecting device) corresponding to the 12V voltage of the T-CON board (the driving board) to change the low frequency (the power-on electric frequency is not needed), when the high frequency of the 12V voltage position converted from the low frequency is read, the monitoring board sends an instruction to control the touch control board to start collecting the background value of the coupling capacitor through the IO end, and in this case, the collected background value can be ensured to belong to the background value of the stable state of the whole liquid crystal interference or the stable state of other commercial power interference, the touch control point is calculated, and the calculation error is avoided.
According to the capacitance screen touch control-based adjusting circuit, after the main control board is connected with the power supply, different voltages are reasonably distributed to each component so as to drive the detection board chip, the driving board and the touch control board chip to operate, one end of the touch board is connected with the collector, the collector sends a user touch electric signal to the driving board through the monitoring board, the voltage stabilizing circuit is arranged between the driving board and the monitoring board so that after the user inputs the touch signal to the collector, the touch signal transmitted by the driving board can be stably and efficiently displayed on the liquid crystal display in real time, abnormal display of the liquid crystal display caused by unstable current of the liquid crystal screen after the user touches the collector is prevented, the overall signal transmission efficiency of the circuit is improved, and the stability of the circuit in the process of transmitting the touch electric signal is ensured.
While the utility model has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.
Claims (9)
1. An adjusting circuit based on capacitive screen touch control is characterized by comprising: the adjusting circuit includes: the device comprises a power supply, a main control board, a driving board, a monitoring board chip and a touch control board chip;
a voltage stabilizing circuit is arranged between the monitoring board chip and the driving board;
the first connecting end of the main control board is connected with the first connecting end of the driving board, the second connecting end of the driving board is connected with the first end of the monitoring board chip, the second connecting end of the monitoring board chip is connected with the second connecting end of the main control board, the third connecting end of the main control board is connected with one end of the touch control board chip, and the other end of the touch control board chip is connected with the third connecting end of the monitoring board chip;
the touch control panel chip is connected with a collector, and a signal receiving end of the touch control panel chip receives a touch signal sent by the collector;
the third connecting end of the driving plate is connected with the liquid crystal display to drive the liquid crystal display to display.
2. The capacitive screen touch based adjustment circuit of claim 1, wherein the voltage stabilizing circuit comprises: a first resistor, a second resistor, and a capacitor;
the voltage input end of the driving plate is connected with one end of the first resistor, the output end of the monitoring plate is simultaneously connected with the other end of the first resistor, one end of the second resistor, one end of the capacitor and the output end of the main control plate, the other end of the second resistor is grounded, and the other end of the capacitor is grounded.
3. The capacitive screen touch-based adjustment circuit according to claim 2, wherein the input voltage of the voltage input end of the driving board is 12V.
4. The capacitive screen touch control-based adjusting circuit according to claim 2, wherein the output voltage of the output end of the main control board is 5V.
5. The capacitive screen touch-based adjustment circuit of claim 2, wherein the first resistor has a resistance of 1.74kΩ.
6. The capacitive screen touch-based adjustment circuit of claim 2, wherein the second resistor has a resistance of 0.66kΩ.
7. The capacitive screen touch-based adjustment circuit of claim 2, wherein the capacitor is a filter capacitor; the capacitance of the filter capacitor is 0.1uF.
8. The capacitive screen touch control-based adjusting circuit according to claim 1, wherein an output current of one end of the driving board connected with the monitoring board is 5mA.
9. The capacitive screen touch-based adjustment circuit of claim 1, wherein an automatic gain module is connected between the touch pad chip and the collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320930482.5U CN219800131U (en) | 2023-04-23 | 2023-04-23 | Adjusting circuit based on capacitive screen touch control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320930482.5U CN219800131U (en) | 2023-04-23 | 2023-04-23 | Adjusting circuit based on capacitive screen touch control |
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| Publication Number | Publication Date |
|---|---|
| CN219800131U true CN219800131U (en) | 2023-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320930482.5U Active CN219800131U (en) | 2023-04-23 | 2023-04-23 | Adjusting circuit based on capacitive screen touch control |
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| Country | Link |
|---|---|
| CN (1) | CN219800131U (en) |
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2023
- 2023-04-23 CN CN202320930482.5U patent/CN219800131U/en active Active
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