Touch system and method based on dimming glass / film and vehicle

Abstract

The invention discloses a touch control system and method based on a dimming glass / film and a vehicle. According to the scheme, through a conductive layer in the dimming glass / film, a corresponding capacitance model is formed between the dimming glass / film and the body ground of a bearing body; based on the formed capacitance model, a corresponding monitoring loop is formed, and the monitoring loop can generate current when the capacitance model changes; when the dimming glass / film is touched, current change generated in the monitoring loop is monitored, and a touch detection signal is formed according to monitored current change information. According to the touch control scheme based on the dimming glass / film, on the basis of an existing dimming glass / film forming scheme, the touch control function can be achieved on the premise that special process treatment does not need to be conducted on the dimming glass / film forming scheme; moreover, the touch control scheme based on the dimming glass / film is simple in implementation scheme, stable and reliable.

Description

Technical Field

[0001] The present invention relates to dimming glass / film technology, and in particular to touch control technology of dimming glass / film. Background Art

[0002] Smart film / glass technology is used in many fields based on its specific functions, such as in automotive smart (color-changing) glass or smart glass curtain walls in the construction industry.

[0003] When the existing dimming film / glass technology is applied, it is necessary to cooperate with the corresponding dimming controller to control and adjust the external electric field applied to the electrochromic material. For the dimming controller, an independent control component (such as a switch, button or central control screen, etc.) needs to be set up for human-computer interaction, and the dimming controller is triggered and controlled according to the results of the human-computer interaction.

[0004] See also Figure 1 , which is a control principle diagram of an existing vehicle dimming (color-changing) film / glass. The overall solution of the existing vehicle dimming (color-changing) film / glass involves a human-machine interaction component (such as a switch, button or central control screen, etc.) 10, an overall VCU 20, a dimming controller 30 and a dimming (color-changing) film / glass 40.

[0005] At the same time, the existing vehicle dimming (color-changing) film / glass is under control, and the driver 50 generates corresponding control signals through the switches, buttons, central control screen and other human-machine interaction components 10 on the vehicle, and gives the control signals to the vehicle VCU 20. The vehicle VCU 20 then sends the instructions to the dimming controller 30 through communication methods such as CAN / LIN. The dimming controller 30 then drives the dimming (color-changing) film / glass 40 to change the haze of the dimming (color-changing) film / glass according to the received instructions. The dimming controller 30 can change the state of the dimming (color-changing) film / glass (such as color, haze, etc.) by outputting voltages of different amplitudes.

[0006] As can be seen from the above, in the specific application of the existing electrochromic technology, a special control component needs to be set up for human-computer interaction as a switch signal input to cooperate with the dimming controller 30 to control the electrochromic. The overall solution structure and control logic are complex, the cost is high, and the human-computer interaction experience is poor.

[0007] The Chinese invention patent application with application publication number CN 110568651 A discloses a touch dimming device and a touch dimming vehicle window. The disclosed solution is based on a dimming film, and a touch sensing chip is used to detect the capacitance between two conductive layers in the dimming film. On this basis, when touching, a certain force needs to be applied to the film to change the distance between the two conductive layers, thereby achieving a change in the capacitance between the two.

[0008] This solution is based on the relative changes of two conductive layers in the dimming film to achieve the touch function. In actual application, there are the following problems:

[0009] (1) This solution requires changing the distance between the two conductive layers through touch to achieve a change in capacitance. In actual applications, the film is sandwiched between the glass, which will greatly affect the effectiveness and reliability of touch control.

[0010] (2) This solution can realize the touch function by touching any of the two conductive layers. Therefore, in practical applications, it is impossible to avoid operation by people outside the vehicle or by external personnel.

[0011] (3) This solution requires two conductive layers in the dimming film to be used for color change. It is well known that when the dimming film is working, there must be an alternating voltage of tens to hundreds of volts between the two layers due to the characteristics of the film. In this case, it is very difficult to detect the slight capacitance change between the two conductive layers in terms of technical implementation. Even if the reliability and accuracy of the detection can be achieved, the overall practicality is very poor.

[0012] Therefore, how to achieve stable and reliable touch function on the electrochromic material of the electrochromic scheme is an urgent problem to be solved in this field. Summary of the invention

[0013] In view of the reliability problems of existing dimming film / glass solutions in realizing touch functions, the purpose of the present invention is to provide a touch system based on dimming glass / film, which can directly realize stable and reliable touch functions on the dimming film / glass; on this basis, the present invention further provides a corresponding touch method and a vehicle using the touch system.

[0014] In order to achieve the above-mentioned object, the touch control system based on dimming glass / film provided by the present invention includes dimming glass / film, and a dimming driving module;

[0015] The first conductive layer and the second conductive layer in the dimming glass / film are arranged to form a corresponding first capacitance model and a second capacitance model with the body ground of the system carrier body;

[0016] The touch control system based on dimming glass / film further comprises a touch detection module, wherein the touch detection module is configured to generate a detection signal and a shielding signal;

[0017] The touch detection module transmits the detection signal to the first conductive layer, and is configured to monitor the current change formed in the loop formed between the touch detection module and the first capacitance model when the first capacitance model changes, and form a touch detection signal according to the monitored current change information;

[0018] The touch detection module transmits the shielding signal to the second conductive layer and is configured to compensate for the change in the second capacitance model when the change occurs.

[0019] In some implementations of the present invention, the touch detection module and the dimming driving module are configured to be electrically isolated.

[0020] In some implementations of the present invention, the dimming driving module is configured to be electrically isolated from a body ground of a system carrier body.

[0021] In some embodiments of the present invention, the touch detection module is electrically isolated from the conductive layer to which it is connected.

[0022] In some embodiments of the present invention, the touch detection module is connected to the conductive layer by unidirectional isolation or capacitive isolation.

[0023] In some embodiments of the present invention, the first conductive layer in the switchable glass / film includes a single conductive region or a plurality of conductive sub-regions.

[0024] In some embodiments of the present invention, when the conductive layer includes a plurality of conductive partitions, each conductive partition is respectively connected to a touch detection module and can respectively form a corresponding capacitance model.

[0025] In order to achieve the above object, the present invention provides a touch control method based on dimming glass / film, and the control method includes:

[0026] Based on the conductive layer in the dimming glass / film, a corresponding capacitance model is formed between the dimming glass / film and the body ground of the carrier body;

[0027] Based on the constructed capacitance model, a corresponding monitoring loop is formed, wherein the monitoring loop is capable of generating a current when the capacitance model changes;

[0028] When the dimming glass / film is touched, the current change generated in the monitoring circuit is monitored, and a touch detection signal is formed according to the monitored current change information.

[0029] In some embodiments of the present invention, the control method monitors a monitoring loop composed of a capacitance model formed by a group of conductive layers in the dimming glass / film through a detection signal; and at the same time, shields the capacitance model formed by another group of conductive layers in the dimming glass / film through a shielding signal.

[0030] In order to achieve the above-mentioned object, the present invention provides a vehicle, wherein the vehicle is provided with a touch control system based on dimming glass / film.

[0031] The touch control solution based on dimming glass / film provided by the present invention can realize the touch control function on the basis of the existing dimming glass / film composition solution without the need for special process treatment of the dimming glass / film composition solution; and the touch control solution based on dimming glass / film is simple to implement and has stable reliability.

[0032] When the touch control solution based on dimming glass / film provided by the present invention is applied, the dimming glass / film can be directly used as an input device for control signals without setting up an additional controller, making the entire control operation simpler and more convenient, improving the user experience, and reducing the overall cost.

[0033] The touch control solution based on dimming glass / film provided by the present invention can be applied to vehicles, and can also be applied to dimming control of glass curtain walls in the construction industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0035] Figure 1 This is the control principle diagram of the existing vehicle dimming (color-changing) film / glass;

[0036] Figure 2 This is an example diagram of the state when the two ITO conductive layers in the PDLC dimming film or glass are not powered;

[0037] Figure 3 This is an example diagram of the state when two ITO conductive layers in the PDLC dimming film or glass are powered on;

[0038] Figure 4 This is a control principle diagram of the dimming glass / film in the present invention;

[0039] Figure 5 This is a system principle diagram of a touch control system based on dimming glass / film in Example 1 of the present invention;

[0040] Figure 6 This is a schematic diagram of touch detection of dimming film or glass in Example 1 of the present invention;

[0041] Figure 7 This is an example diagram of a multi-zone dimming film or glass in Example 2 of the present invention;

[0042] Figure 8 This is a schematic diagram of touch detection for multi-zone dimming film or glass in Example 2 of the present invention. DETAILED DESCRIPTION

[0043] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams.

[0044] The solution of the present invention is aimed at the existing dimming glass / film solution, and abandons the need to independently set up a controller (switch, button, central control screen, etc.) relative to the dimming film or dimming glass to generate a control signal to the corresponding control element (such as VCU), and then the control element (such as VCU) controls the dimming controller to control the action of the dimming glass / film; instead, it is innovative in that, without any special process treatment of the dimming glass / film, a touch function is integrated on the dimming glass / film, and a dimming control drive circuit and a touch signal detection circuit are cooperated to realize direct touch of the dimming glass / film as a signal input to turn on or off or adjust the working state of the dimming glass / film.

[0045] The dimming glass / film involved in the solution of the present invention mainly involves PDLC, SPD, EC, LC dimming film or glass.

[0046] It should be noted here that the dimming glass / film involved in the solution of the present invention is not limited to the above-mentioned form. It can be understood that as long as the dimming glass / film has two conductive layers, it falls within the scope of the solution of the present invention.

[0047] For ease of explanation, the PDLC dimming film or glass is taken as an example to illustrate the touch control solution based on the dimming glass / film provided by the present invention.

[0048] See also Figure 2 and Figure 3 , which is a basic structural principle diagram of PDLC dimming film or glass. As can be seen from the figure, the PDLC dimming film or glass 40 mainly comprises two ITO conductive layers 41, dispersed liquid crystal 42 and liquid crystal particles 43 located between the two ITO conductive layers 41, and insulating films or glass 44 located outside the two ITO conductive layers 41.

[0049] like Figure 2 As shown, when the two ITO conductive layers 41 of the PDLC dimming film or glass 40 are not energized, the liquid crystal particles 43 inside are arranged in a disordered manner, and visible light cannot effectively reach the other side, and the film / glass appears in a fogged state;

[0050] like Figure 3 As shown, after the two ITO conductive layers 41 of the PDLC dimming film or glass 40 are energized, the liquid crystal particles inside are regularly arranged under the action of the electric field force, so that visible light can reach the other side and the film / glass appears transparent.

[0051] In this regard, the present invention utilizes the structural characteristics of a conductive layer on each side of the dimming film or glass, introduces a touch detection module to cooperate with the two conductive layers, constructs the first conductive layer into a touch signal input layer, and constructs the second conductive layer into a signal shielding layer, and constructs a corresponding capacitance model between the first conductive layer and the main body ground of the main body carrying the dimming film or glass.

[0052] It should be noted that the “first” and “second” here are only used to distinguish the two conductive layers in name, and do not limit the order between the two conductive layers.

[0053] On this basis, when the first side where the first conductive layer in the dimming film or glass is located is touched, the touch detection module will be able to detect a touch signal; when the second side where the second conductive layer in the dimming film or glass is located is touched, the touch detection module will not detect a touch signal, that is, there will be no signal input.

[0054] In this way, the touch signal detected by the touch detection module can be used as a signal input for switching the dimming film or glass, to turn on or off the dimming function of the dimming film or glass, or to adjust the dimming state of the dimming film or glass (such as color change, haze, etc.).

[0055] like Figure 4 As shown, in a specific application, the solution of the present invention introduces a dimming controller 100 , and the dimming controller 100 drives the dimming film or glass 200 to realize the integration of a touch function on the dimming film or glass 200 .

[0056] The dimming controller 100 introduced here is configured with a corresponding dimming driving functional module and a touch detection module, wherein the dimming driving functional module is configured to connect the conductive layer in the dimming film or glass 200 to control the power-on state of the conductive layer in the dimming film or glass 200, wherein the power-on state includes whether power is on, the power-on voltage or the power-on time, etc.

[0057] Since the power-on state of the conductive layer in the dimming film or glass 200 corresponds to the on and off of the dimming function of the dimming film or glass 200, as well as the dimming state, the dimming driving function module can control the on and off of the dimming function of the dimming film or glass 200, as well as the dimming state through the corresponding control signal.

[0058] The touch detection module is configured to establish a capacitive isolation connection with the conductive layer in the dimming film or glass 200, construct the first conductive layer in the dimming film or glass 200 into a touch signal input layer, and the second conductive layer into a signal shielding layer, and form a corresponding capacitance model between the first conductive layer and the main body ground of the main body carrying the dimming film or glass.

[0059] The touch detection module configured in this way can detect a touch signal when the first side where the first conductive layer in the dimming film or glass is located is touched; however, when the second side where the second conductive layer in the dimming film or glass is located is touched, no touch signal will be detected, i.e., no signal will be input.

[0060] On this basis, the properties of the touch signal detected by the touch detection module are further analyzed and configured so that the touch signal forms a corresponding relationship with the control signal in the dimming driving function module that controls the power-on state of the conductive layer in the dimming film or glass 200, thereby forming a corresponding touch signal.

[0061] The attributes of the touch signal are not limited here and can be determined according to actual needs. For example, they can be signal strength, signal duration, etc.

[0062] The corresponding adaptation relationship between the touch signal and the control signal in the dimming driving functional module is not limited here and can be determined according to actual needs.

[0063] In this way, the operator 300 can control the dimming function of the dimming film or glass 200 and / or adjust the dimming state of the dimming film or glass 200 (such as color change, haze, etc.) by simply touching the dimming film or glass 200, without the need for a special switch signal input (such as Figure 1 Human-computer interaction components 10: switches, buttons or central control screens, etc.), simplify system logic, reduce costs, and improve user experience;

[0064] At the same time, based on the capacitive isolation connection between the touch detection module and the conductive layer in the dimming film or glass 200, only one side of the dimming film or glass 200 is integrated with the touch function, while the other side does not have the touch function. This can effectively avoid false triggering in actual applications (avoiding the problem that both layers have touch functions, affecting the actual use effect), thereby ensuring the accuracy and reliability of the touch function.

[0065] With respect to the solution provided by the present invention, the implementation scheme and corresponding technical features thereof are explained below through examples.

[0066] Example 1

[0067] This example provides a solution for integrating touch function into dimming glass / film based on the present invention, forming a touch control system solution based on dimming glass / film.

[0068] See also Figure 5 The touch control system based on dimming glass / film provided in this example mainly comprises two parts: a dimming controller 100 and a dimming glass / film 200 .

[0069] The dimming glass / film 200 is arranged on a corresponding supporting body, such as a vehicle body, a wall, etc.

[0070] The dimming controller 100 in this system mainly includes a control unit 110, a dimming driving module 120, a touch detection module 130, and a power module 140; wherein the control unit 110 controls the connection between the dimming driving module 120 and the touch detection module 130 respectively, and then controls the connection between the dimming glass / film 200 through the dimming driving module 120 and the touch detection module 130, so that the dimming glass / film 200 integrates the touch function.

[0071] The power module 140 configured in the dimming controller 100 serves as a basic functional module of the dimming controller 100 and is used to manage the power supply of different modules in the entire controller.

[0072] The specific structure of the power module 140 is not limited and can be determined according to actual needs.

[0073] The control unit 110 configured in the dimming controller 100 serves as the control center in the dimming controller 100 to control other functional modules connected to the dimming controller, and coordinate the corresponding functional modules to work together to realize the corresponding functions of the corresponding dimming controller, such as communication, enabling, detection, control, etc.

[0074] As a further example, the control unit 110 may be composed of an MCU, a CPU, an APU, etc. It is understandable that the specific configuration of the control unit 110 is not limited thereto.

[0075] The dimming driving module 120 configured in the dimming controller 100 is specifically configured to be controlled by the control unit 110 and is used to generate the voltage required to drive the dimming glass / film 200 to work based on the power provided by the power module 140.

[0076] For example, the effective power value required for driving the PDLC dimming film or glass is a 48VAC sinusoidal alternating current. The dimming driving module 120 needs to convert the received power (such as direct current) into the required alternating current through inversion.

[0077] The structure and working mode of the dimming driving module 120 are not limited and can be determined according to actual needs. It only needs to be able to form electrical parameters that meet the requirements of PDLC dimming film or glass driving.

[0078] As a further optimization setting, in order to avoid the influence of the high voltage output by the dimming driver module 120 on the touch signal, this example further configures a power isolation module 150 in the dimming controller 100. The power isolation module 150 is arranged between the power module 140 and the dimming driver module 120, and electrically connects the power module 140 and the dimming driver module 120, thereby achieving local isolation of the dimming driver module 120 from the carrier body (specifically, it can be understood as isolation from the ground), thereby avoiding the influence of the high voltage output by the dimming driver module on the touch signal.

[0079] As an example, the power isolation module 150 in this example preferably uses magnetic isolation (ie, transformer isolation) to achieve isolation between the dimming driving module 120 and the local area.

[0080] The structure and working mode of the power isolation module 150 are not limited and can be determined according to actual needs.

[0081] As a further optimization setting, in order to protect the output voltage of the dimming driver module 120, this example further configures an output protection module 160 in the dimming controller 100. The output protection module 160 is specifically configured to be controlled by the control unit 110. The input end of the output protection module 160 is electrically connected to the output end of the dimming driver module 120. The output end of the output protection module 160 serves as the output end of the controller and is electrically connected to the dimming glass / film 200, thereby protecting the driving output voltage of the dimming driver module 120, preventing external overcurrent and short circuit from damaging the controller, and preventing the controller from outputting overvoltage, undervoltage or open-circuit output, thereby improving the safety and reliability of the output.

[0082] The structure and working mode of the output protection module 160 are not limited and can be determined according to actual needs.

[0083] The touch detection module 130 configured in the dimming controller 100 is specifically configured to be controlled by the control unit 110 and directly connected to the dimming glass / film 200 by signal; the touch detection module 130 is configured with at least two groups of signal terminals, and the two groups of signal terminals are respectively connected to the two conductive layers in the dimming glass / film by signal; the touch detection module 130 can generate a detection signal and a shielding signal, and output them to the two conductive layers in the dimming glass / film through the two groups of signal terminals, respectively, and at the same time, the conductive layer in the dimming glass / film is configured to form a corresponding capacitance model with the reference ground of the corresponding carrier body (for example, it can be understood as the whole vehicle reference ground for automotive applications, and it can be understood as the earth reference plane for architectural applications);

[0084] On this basis, the touch detection module 130 is further configured to form a loop by cooperating with the signal end for transmitting the detection signal and the capacitance model formed by the connected conductive layer, and to form a current in the loop.

[0085] On this basis, when the side of the conductive layer receiving the detection signal in the dimming glass / film is touched, the capacitance model formed based on the conductive layer receiving the detection signal will change. When the capacitance model changes, it will affect the current in the formed circuit, causing the current in the circuit to change; at that time, the touch detection module 130 monitors the current change in the circuit based on the detection signal, and forms a touch detection signal according to the monitored current change information.

[0086] The structure of the touch detection module 130 is not limited and can be determined according to actual needs as long as it can implement capacitive touch detection.

[0087] As a further optimization setting, in order to improve the stability and reliability of detection by the touch detection module 130, this example further configures a communication isolation module 170 in the dimming controller 100. The communication isolation module 170 is used to communicate the touch detection module 130 and the control unit 110, that is, to isolate the communication between the touch detection module 130 and the control unit 110, so as to prevent the working state of the control unit 110 from interfering with the working state of the touch detection module 130.

[0088] Specifically, based on the deployed communication isolation module 170, the control unit 100 of the dimming controller 100 can be deployed on the same side as the dimming driving module 120 when the dimming controller 100 is electrically deployed, which can effectively reduce the cost. At the same time, the functional modules related to the dimming driving module 120 in the dimming controller 100 (such as the dimming driving module 120, the control unit 110, and the output protection module 160) can be electrically isolated and deployed on the same side, and are isolated from the functional modules deployed on the ground side of the body of the carrier body, such as the touch detection module 130, so as to avoid mutual interference;

[0089] Furthermore, since the voltage of the dimming drive module is relatively high and the power is relatively large during actual application, the control unit is required to provide more control signals, detection signals, and protection signals. In this example, arranging the dimming controller 100 on the same side as the dimming drive module 120 can improve the response speed of control detection and protection, improve reliability, and also reduce the number of signal isolation paths, thereby reducing costs.

[0090] In some implementations of this example, a communication module 180 is further configured in the dimming controller 100 of this example. The communication module 180 is configured to be controlled by the control unit 110 to implement the external communication function of the controller.

[0091] Specifically, the communication module 180 here is configured to communicate with the communication isolation module 170 in the dimming controller 100, and a communication channel is formed between the communication module 180 and the control unit 110 through the communication isolation module 170. In this way, the electrical isolation function of the communication isolation module 170 can ensure the stability and reliability of the external and internal communications of the communication module 18.

[0092] The dimming controller 100 provided in this example integrates a touch detection module 130 and a dimming drive module 120. At the same time, since the signal output by the touch detection module is very weak, and the output voltage of the dimming drive module is generally tens of volts, in order to avoid the high-voltage output of the dimming drive module affecting the touch detection module, this example innovatively introduces a power isolation module 150 and a communication isolation module 170 in the dimming controller 100, so that the touch detection module 130 and the dimming drive module 120 are electrically isolated when deployed, thereby effectively preventing the output voltage of the drive module from interfering with the touch detection;

[0093] At the same time, the dimming driving module 120 is further isolated from the main body ground of the carrier body of the dimming glass / film 200 through the power isolation module 150 and the communication isolation module 170 (for example, depending on the different carrier locations, the main body ground here is the vehicle body ground, the casing ground, the earth, etc.), thereby effectively preventing the capacitance model between the corresponding conductive layer in the dimming glass / film 200 and the main body ground of the carrier body from being affected by the output voltage of the dimming driving module.

[0094] Specifically, the main body ground of the carrier body here (such as the car body ground in the figure) serves as the reference ground plane of the entire system. At the same time, the functional modules on the driving side (such as the dimming driving module 120 and the control unit 110) are electrically isolated from the main body ground of the carrier body through the power isolation module 150, so that the driving side constitutes its own independent reference ground plane, and due to the electrical isolation of the power isolation module 150, a complete electrical circuit cannot be formed between the two reference ground planes, thereby avoiding mutual electrical influence between the two.

[0095] To further illustrate the connection and cooperation between the dimming controller 100 and the dimming glass / film 200 in this system solution so that the dimming glass / film 200 integrates the touch function, the following is a specific description using the PDLC dimming film or glass installed on a vehicle as an example.

[0096] See also Figure 6 , which shows a touch detection principle diagram of the PDLC dimming film or glass 200 as a dimming glass / film cooperating with the touch detection module 130 and the dimming driving module 120 in the dimming controller 100, so that the PDLC dimming film or glass 200 integrates the touch function.

[0097] The PDLC dimming film or glass 200 is placed on a vehicle, and its structure mainly includes a first ITO conductive layer 210, a second ITO conductive layer 220, dispersed liquid crystal and liquid crystal particles 230 located between the two ITO conductive layers, a first insulating film or glass 240 located outside the first ITO conductive layer 210, and a second insulating film or glass 250 located outside the second ITO conductive layer 220; the mutual coordination relationship between these components is as described above for the PDLC dimming film or glass 40, and will not be repeated here.

[0098] In conjunction with this, the dimming controller 100 is also arranged on the vehicle, and the output end of the dimming driving module 120 is electrically connected to the first ITO conductive layer 210 and the second ITO conductive layer 220 in the PDLC dimming film or glass 200 respectively; the signal end of the touch detection module 130 is signal-connected to the first ITO conductive layer 210 and the second ITO conductive layer 220 in the PDLC dimming film or glass 200 respectively.

[0099] Furthermore, the touch detection module 130 and the dimming driver module 120 are electrically isolated during deployment by configuring corresponding power isolation modules and communication isolation modules, so that the output voltage of the dimming driver module 120 does not form a loop with the touch detection module 130, thereby avoiding affecting the touch detection.

[0100] Furthermore, by configuring corresponding power isolation modules and communication isolation modules, the dimming driving module 120 is isolated from the deployed vehicle body ground, so that the driving voltage of the dimming driving module 120 will not affect the capacitance model between the conductive layer in the PDLC dimming film or glass 200 and the vehicle body ground.

[0101] On this basis, the touch detection module 130 is specifically provided with two groups of signal terminals: a first signal terminal 131 and a second signal terminal 132 .

[0102] The first signal terminal 131 is configured to output a detection signal and is connected to the first ITO conductive layer 210 in the PDLC dimming film or glass 200 (i.e., connected to an output terminal of the dimming driving module 120). Accordingly, a corresponding capacitance model C1 is formed between the first ITO conductive layer 210 in the PDLC dimming film or glass 200 and the vehicle body ground. Here, C1 is an equivalent capacitance model formed between the first ITO conductive layer 210 in the PDLC dimming film or glass 200 and the vehicle body ground.

[0103] The second signal terminal 132 on the touch detection module 130 is configured to output a shielding signal and is connected to the second ITO conductive layer 220 in the PDLC dimming film or glass 200 (i.e., connected to another output terminal of the dimming driving module 120). Accordingly, a corresponding capacitance model is also formed between the second ITO conductive layer 220 in the PDLC dimming film or glass 200 and the vehicle body ground.

[0104] The touch detection module 130 cooperates with the capacitance model C1 formed by the first ITO conductive layer 210 based on the detection signal output by the first signal terminal 131, so that the first ITO conductive layer 210 is configured as a touch layer; the touch detection module 130 cooperates with the capacitance model formed by the second ITO conductive layer 220 based on the shielding signal output by the second signal terminal 132, so that the second ITO conductive layer 220 is configured as a shielding layer to cooperate with the first ITO conductive layer 210, so that the PDLC dimming film or glass 200 integrates the touch function on one side.

[0105] On this basis, in order to further isolate the touch detection signal and prevent the output voltage of the dimming driving module 120 from affecting the touch detection module 130 through a possible coupling loop, this example further performs an electrical isolation connection between the signal end of the touch detection module 130 and the two conductive layers in the PDLC dimming film or glass 200. In this example, diode unidirectional isolation or capacitor isolation is preferably used.

[0106] Specifically, this example further sets a diode D2 on the connection circuit between the first signal terminal 131 of the touch detection module 130 and the first ITO conductive layer 210, and sets a diode D1 on the connection circuit between the second signal terminal 132 of the touch detection module 130 and the second ITO conductive layer 220. Here, unidirectional isolation is achieved by setting corresponding diodes at the first signal terminal 131 and the second signal terminal 132, so that the high voltage of the driving test will not crosstalk to one side of the touch detection module.

[0107] As an alternative, capacitor isolation may be used for the first signal terminal 131 and the second signal terminal 132 .

[0108] Based on the deployment setting of the above scheme, when the touch detection module 130 performs touch detection on the PDLC dimming film or glass 200, the touch detection module 130 outputs a voltage of a certain waveform as a detection signal through the first signal terminal 131, thereby charging and discharging the conductive coupling capacitor model, and forming a loop through the coupling capacitor C1 between the detection object and the vehicle body ground. The touch detection module 130 monitors the output current of the loop.

[0109] In this way, when the first insulating film or glass 240 outside the first ITO conductive layer 210 in the PDLC dimming film or glass 200 is touched by a passenger, Figure 6 K1 is in a closed state (K1 here represents whether the driver or passenger touches the dimming film / glass), and then forms a corresponding equivalent capacitance model Cm;

[0110] At that time, the coupling capacitance C1 between the touch object and the vehicle body ground will change, and the output current of the formed loop will change accordingly. The touch detection module 130 can effectively detect and identify the touch state by monitoring the change of the output current of the loop.

[0111] While outputting a detection signal through the first signal terminal 131, the touch detection module 130 also outputs a voltage with the same waveform as the detection signal as a shielding signal through the second signal terminal 132. In this way, when the equivalent capacitance formed between the second ITO conductive layer 220 and the vehicle body ground changes (such as when the second insulating film or glass 250 outside the second ITO conductive layer 220 is touched by a person), the shielding signal will charge the capacitance model formed between the second ITO conductive layer 220 and the vehicle body ground to reach a new steady state, thereby avoiding changes in the capacitance of the capacitance model formed between the second ITO conductive layer 220 and the vehicle body ground from affecting the detection signal.

[0112] In this way, the PDLC dimming film or glass 200 can be effectively touched only on the side of the first insulating film or glass 240, that is, a touch signal is generated; the touch is invalid on the side of the second insulating film or glass 250, and no touch signal is generated. While realizing the integrated touch function of the PDLC dimming film or glass 200, it can also realize single-side touch effectiveness, avoiding the problem of simultaneous effective touch on both sides and the occurrence of false touch.

[0113] The touch control system based on dimming glass / film deployed on the vehicle in this example uses the capacitance model formed between the conductive layer in the PDLC dimming film or glass 200 and the vehicle body ground as the touch detection object. When the driver or occupant touches the film or the ratio, the entire capacitance model will change, and the touch detection module will simultaneously recharge the capacitance model, and synchronously detect the current change in the loop formed between the capacitance model and the touch detection module during the charging and discharging process; on this basis, the touch detection module is configured to effectively detect and identify the touch state according to the detected current change amount and / or change law, so as to effectively identify the operation of the driver or occupant on the dimming film / glass, form corresponding touch information, and then the dimming controller forms the corresponding touch adjustment instruction based on this, and the dimming drive module touches the adjustment instruction and executes the corresponding action: turning on or off the dimming function of the dimming film or glass, or adjusting the state of the dimming film or glass (such as color change, haze, etc.).

[0114] It should be noted here that the touch control system solution based on dimming glass / film given in this example is not only applicable to PDLC dimming film or glass, but also to dimming film / glass of other materials. When used for dimming film / glass of other materials, as long as the driving voltage output by the controller is adaptively adjusted according to the working principle of the dimming film / glass of the corresponding material, direct touch control of the film / glass can be achieved, without the need for special process treatment of the film / glass, and even more without the need to add additional touch film.

[0115] Example 2

[0116] This example provides a corresponding touch control system solution based on the multi-zone dimming glass / film for the purpose of integrating the corresponding touch control function on the multi-zone dimming glass / film.

[0117] like Figure 7 As shown, the multi-zone dimming glass / film involved in this example is a multi-zone dimming film / glass. The multi-zone dimming film / glass is a dimming film / glass divided into multiple zones. The basic structure of the multi-zone film / glass is consistent with that of an ordinary dimming film / glass, similar to integrating multiple films into one film / glass; the multi-zone dimming film / glass has a common conductive layer, and each zone has its own conductive layer.

[0118] For multi-zone dimming film / glass, the working principle of the electrical characteristics of the cooperation between each zone conductive layer and the common conductive layer is consistent with that of a single zone.

[0119] Accordingly, based on the touch control system solution based on dimming glass / film given in Example 1, this example configures the common conductive layer in the multi-partition dimming film / glass into a shielding layer through the cooperation of the touch detection module and the dimming driving module. At the same time, an equivalent capacitance is formed between each partition conductive layer in the multi-partition dimming film / glass and the main ground of the supporting body, so that each partition conductive layer is configured as a sensing layer relative to the common conductive layer.

[0120] Specifically, the dimming driving module performs adaptive driving output adjustment corresponding to the configuration of the multi-zone dimming film / glass, which is a technology well known to those skilled in the art and will not be elaborated here.

[0121] Furthermore, the touch detection module is configured into a group of shielding signal terminals and multiple groups of detection signal terminals for the structure of the multi-zone dimming film / glass. One group of shielding signal terminals is connected to the common conductive layer signal in the multi-zone dimming film / glass through the shielding signal channel, and the multiple groups of detection signal terminals are respectively connected to each zone conductive layer signal in the multi-zone dimming film / glass through the detection signal channel. The number of detection signal terminals set here corresponds to the number of zones of the zone conductive layer in the multi-zone dimming film / glass.

[0122] In this way, the touch detection module is configured to generate multiple groups of detection signals, and transmit them to each partition conductive layer in the multi-partition dimming film / glass through multiple groups of detection signal terminals, so that each partition conductive layer in the multi-partition dimming film / glass and the body ground of the carrier body form a corresponding capacitance model;

[0123] At the same time, the touch detection module is configured to generate a set of shielding signals, which are transmitted to the common conductive layer in the multi-zone dimming film / glass through the shielding signal terminal to configure the common conductive layer into a shielding layer.

[0124] The other structures and operation processes of the touch control system solution based on dimming glass / film for multi-zone dimming glass / film given in this example are the same as those in Example 1 and are not described in detail here.

[0125] In this way, the touch control system solution based on dimming glass / film given in this example can realize touch detection of multi-zone dimming film / glass (see Example 1 for the specific example principle, which is not repeated here), that is, integrating the corresponding touch control function on the multi-zone dimming film / glass.

[0126] The conductive layer here is preferably an ITO conductive layer.

[0127] As an example, the touch system solution based on dimming glass / film given in this example can adjust the haze of corresponding partitions by touching different partitions, and can also perform different haze adjustments or other functions by realizing certain gesture recognition by touching different partitions simultaneously or sequentially.

[0128] In addition, the touch control system solution based on dimming glass / film for multi-zone dimming glass / film given in this example can be applied to vehicles to achieve dimming control, and can also be applied to glass curtain walls in the construction industry to achieve dimming control.

[0129] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A touch control system based on dimming glass / film, comprising dimming glass / film and a dimming driving module; characterized in that: The first conductive layer and the second conductive layer in the dimming glass / film are arranged to form a corresponding first capacitance model and a second capacitance model with the body ground of the system carrier body; The touch control system based on dimming glass / film further comprises a touch detection module, wherein the touch detection module is configured to generate a detection signal and a shielding signal; The touch detection module transmits the detection signal to the first conductive layer, and is configured to monitor the current change formed in the loop formed between the touch detection module and the first capacitance model when the first capacitance model changes, and form a touch detection signal according to the monitored current change information; The touch detection module transmits the shielding signal to the second conductive layer and is configured to compensate for the change in the second capacitance model when the change occurs.

2. The touch control system based on dimming glass / film according to claim 1, characterized in that: The touch detection module and the dimming driving module are configured to be electrically isolated.

3. The touch control system based on dimming glass / film according to claim 1, characterized in that: The dimming driving module is configured to be electrically isolated from the body ground of the system carrier body.

4. The touch control system based on dimming glass / film according to claim 1, characterized in that: The touch detection module is electrically isolated from the conductive layer to which it is connected.

5. The touch control system based on dimming glass / film according to claim 4, characterized in that: The touch detection module is connected to the conductive layer by unidirectional isolation or capacitive isolation.

6. The touch control system based on dimming glass / film according to claim 1, characterized in that: The first conductive layer in the switchable glass / film includes a single conductive region or a plurality of conductive sub-regions.

7. The touch control system based on dimming glass / film according to claim 6, characterized in that: When the conductive layer includes a plurality of conductive partitions, each conductive partition is respectively connected to the touch detection module and can respectively form a corresponding capacitance model.

8. A touch control method based on dimming glass / film, characterized in that: The control method comprises: Based on the conductive layer in the dimming glass / film, a corresponding capacitance model is formed between the dimming glass / film and the body ground of the carrier body; Based on the constructed capacitance model, a corresponding monitoring loop is formed, wherein the monitoring loop is capable of generating a current when the capacitance model changes; When the dimming glass / film is touched, the current change generated in the monitoring circuit is monitored, and a touch detection signal is formed according to the monitored current change information.

9. The touch control method based on dimming glass / film according to claim 8, characterized in that: The control method monitors a monitoring loop composed of a capacitance model formed by a group of conductive layers in the dimming glass / film through a detection signal; and shields the capacitance model formed by another group of conductive layers in the dimming glass / film through a shielding signal.

10. A vehicle, characterized in that The vehicle is provided with a touch control system based on dimming glass / film as described in any one of claims 1 to 7.

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