CN116009728A - Detection method, detection circuit, touch device and electronic equipment - Google Patents

Abstract

Embodiments of the present invention provide a detection method, a detection circuit, a touch device and electronic equipment. The detection method includes: in the first detection mode, detecting the capacitance change state of at least one touch key of the electronic device; when the capacitance change state meets the touch proximity condition, switching from the first detection mode to the second detection mode. Two detection modes: in the second detection mode, based on the touch pressing condition, detecting the capacitance change state of the at least one touch key, the capacitance change threshold indicated by the touch pressing condition is greater than the touch proximity condition Indicates the capacitance change threshold. The solution of the embodiment of the present invention realizes the multi-modal operation of the touch key without increasing the complexity of the touch operation, and also improves the detection efficiency.

Description

Detection method, detection circuit, touch device and electronic equipment

technical field

The embodiments of the present invention relate to the field of computer technology, and in particular to a detection method, a detection circuit, a touch control device and electronic equipment.

Background technique

In the current home appliances, for large appliances such as refrigerators, air conditioners, range hoods, or for small appliances such as microwave ovens, induction cookers, and table lamps, the button functions are basically realized by capacitive touch buttons. Compared with mechanical buttons, control buttons have incomparable advantages in waterproof, anti-fouling, durability, and user experience.

However, the recognition mode of the current touch button is relatively single, and there is room for improvement.

Contents of the invention

In view of this, the embodiments of the present invention provide a detection method, a detection circuit, a touch device, and an electronic device to at least partly solve the above problems.

According to the first aspect of the embodiments of the present invention, a detection method is provided, including: in the first detection mode, detecting the capacitance change state of at least one touch key of the electronic device; condition, switch from the first detection mode to the second detection mode; in the second detection mode, based on the touch press condition, detect the capacitance change state of the at least one touch key, and the touch press The capacitance variation threshold indicated by the condition is greater than the capacitance variation threshold indicated by the touch proximity condition.

In another implementation manner of the present invention, the method further includes: switching from the second detection mode to the first detection mode when the capacitance state does not meet a touch proximity condition.

In another implementation manner of the present invention, the at least one touch key includes a plurality of touch keys. In the second detection mode, detecting the capacitance change state of the at least one touch key based on the touch pressing condition includes: in the second detection mode, based on each of the plurality of touch keys The touch pressing condition of the touch button is used to detect the capacitance change state of the plurality of touch buttons.

In another implementation manner of the present invention, the method further includes: periodically performing channel switching between a plurality of independent detection channels and a fusion detection channel formed by the plurality of independent detection channels, wherein the plurality of independent detection channels The independent detection channels respectively correspond to the plurality of touch keys, and are used for detection based on respective touch pressing conditions of the plurality of touch keys, and the fusion detection channel is used for detection based on touch proximity conditions.

In another implementation manner of the present invention, the periodically performing channel switching between a plurality of independent detection channels and a fusion detection channel formed by the plurality of independent detection channels includes: Channel switching is performed between independent detection channels and the fusion detection channel formed by the plurality of independent detection channels, wherein, within the preset cycle period, the plurality of independent detection channels correspond to a plurality of first detection periods respectively , the fusion detection channel corresponds to a second detection period, and the plurality of first detection periods do not overlap with the second detection period.

In another implementation manner of the present invention, the method further includes: in response to switching from the first detection mode to the second detection mode, controlling the electronic device to enter the wake-up state from the sleep state, and at the same time start the The detection of the touch pressing condition.

In another implementation manner of the present invention, the response to switching from the first detection mode to the second detection mode, and controlling the electronic device to enter the wake-up state from the sleep state includes: responding to switching from the second detection mode Switching from a detection mode to the second detection mode, sending a first enabling signal to the main controller of the electronic device, the first enabling signal indicating to wake up the function associated with the at least one touch button .

In another implementation manner of the present invention, the method further includes: in response to switching from the second detection mode to the first detection mode, controlling the electronic device to enter the sleep state from the wake-up state , and start detection based on the touch press condition at the same time.

In another implementation manner of the present invention, the responding to switching from the second detection mode to the first detection mode, controlling the electronic device to enter the sleep state from the wake-up state includes: Sending a second enable to the main controller of the electronic device when the capacitance change state does not meet the touch proximity condition within a preset period of time after switching from the second detection mode to the first detection mode signal, the second enable signal indicates to make the function associated with the at least one touch key dormant.

In another implementation manner of the present invention, the detection method further includes: in the third detection mode, detecting the capacitance change state of the at least one touch key; when the at least one touch key is in the third detection mode Switch from the third detection mode to the first detection mode when the state of the capacitance change in meets the touch key condition.

According to the second aspect of the embodiments of the present invention, there is provided a detection circuit, including: a first detection module, in the first detection mode, detects the capacitance change state of at least one touch key of the electronic device, and When the changing state meets the touch proximity condition, switch from the first detection mode to the second detection mode; in the second detection mode, the second detection module detects the at least one touch control based on the touch pressing condition Capacitance variation state of the key, wherein the capacitance variation threshold indicated by the touch pressing condition is greater than the capacitance variation threshold indicated by the touch proximity condition.

In another implementation manner of the present invention, the first detection module is further configured to switch from the second detection mode to the first detection mode when the capacitance state does not meet the touch proximity condition.

In another implementation manner of the present invention, at least one touch key includes a plurality of touch keys. The second detection module is specifically used for: in the second detection mode, based on the respective touch pressing conditions of the plurality of touch keys, detecting the state of capacitance variation of the plurality of touch keys.

In another implementation manner of the present invention, the detection circuit further includes a channel switching module, configured to: periodically perform channel switching between multiple independent detection channels and a fusion detection channel formed by the multiple independent detection channels. Multiple independent detection channels correspond to multiple touch keys respectively, and are used for detection based on respective touch pressing conditions of the multiple touch keys, and fusion detection channels are used for detection based on touch proximity conditions.

In another implementation manner of the present invention, the channel switching module is specifically configured to: perform channel switching between a plurality of independent detection channels and a fusion detection channel formed by a plurality of independent detection channels based on a preset period of time, wherein, in the preset period It is assumed that within the cycle period, the multiple independent detection channels correspond to the multiple first detection periods, the fusion detection channel corresponds to the second detection period, and there is no overlap between the multiple first detection periods and the second detection period.

In another implementation of the present invention, the detection circuit further includes a control module, and the control module is used for: responding to switching from the first detection mode to the second detection mode, controlling the electronic device to enter the wake-up state from the sleep state, and at the same time start the The detection of the touch pressing condition.

In another implementation of the present invention, the control module is specifically configured to: send a first enable signal to the main controller of the electronic device in response to switching from the first detection mode to the second detection mode, the first enable signal indicates A function associated with at least one touch key is awakened.

In another implementation of the present invention, the control module is further configured to: respond to switching from the second detection mode to the first detection mode, control the electronic device to enter the sleep state from the wake-up state, and at the same time start the electronic device based on the touch proximity condition detection.

In another implementation manner of the present invention, the control module is specifically configured to: within a preset period of time after switching from the second detection mode to the first detection mode, the capacitance change state does not meet the touch proximity condition In this case, a second enable signal is sent to the main controller of the electronic device, and the second enable signal indicates to make the function associated with the at least one touch key dormant.

In another implementation manner of the present invention, the detection circuit further includes a third detection module, and the third detection module detects the capacitance change state of the at least one touch key in the third detection mode; When the capacitive change state of the touch key in the third detection mode meets the condition of the touch key, switch from the third detection mode to the first detection mode.

According to a third aspect of an embodiment of the present invention, there is provided a touch device, comprising: at least one touch key and the detection circuit according to the second aspect, the at least one touch key is electrically connected to the detection circuit .

According to a fourth aspect of the embodiments of the present invention, there is provided an electronic device, including: the touch device according to the third aspect and a main controller. The main controller is electrically connected with the touch device.

In the solution of the embodiment of the present invention, by setting the capacitance variation threshold indicated by the touch pressing condition to be greater than the capacitance variation threshold indicated by the touch proximity condition, the detection of the proximity operation of the touch key is realized without increasing the complexity of the touch operation. In addition, when the capacitive change state meets the touch proximity condition, switching from the first detection mode to the second detection mode does not need to monitor the states of the two operations at the same time, improving the detection efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments described in the embodiments of the present invention, and those skilled in the art can also obtain other drawings based on these drawings.

FIG. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Fig. 2 is a flowchart of steps of a detection method according to another embodiment of the present invention.

FIG. 3 is a schematic diagram of a channel scanning process of an example of the detection method in FIG. 2 .

FIG. 4 is a schematic flowchart of a wake-up control process applicable to the detection method in FIG. 2 .

FIG. 5 is a structural block diagram of a detection circuit according to another embodiment of the present invention.

Detailed ways

In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and detailedly described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, but not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the embodiments of the present invention shall fall within the protection scope of the embodiments of the present invention.

The specific implementation of the embodiments of the present invention will be further described below in conjunction with the accompanying drawings of the embodiments of the present invention.

Fig. 1 is a schematic architecture diagram of an electronic device according to an example. As shown in the figure, the electronic device 100 includes a main controller 130 and a touch device 11 , and the electronic device 100 may also include a power management module 10 and other functional modules 140 . The power supply 10 can receive DC power provided by an external adapter (not shown) or a DC battery, and step down the DC power to obtain the low-voltage DC power required by the main controller 130 and the touch control device 11 to work normally.

Further, the electronic device may be a device with a control panel, such as a household appliance or an Internet of Things device. Specifically, the touch device 11 includes a detection circuit 110 and at least one touch button 120 . For example, the touch device 11 includes a control panel 12 and a detection circuit 110 of the electronic device 100 , and at least one touch button 120 is disposed on the control panel 12 .

Generally speaking, the function of the touch device 11 is realized by combining the detection circuit 110 and the touch button 120. The touch device 11 generally adopts a self-capacitance detection method, and the detection circuit 110 can be configured with multiple touch detection channel pins. , these pins are connected to the touch button 120, when a conductor such as a finger of the human body touches or presses the pressing area of the touch button 120, the capacitance value to ground on the corresponding detection channel will be changed, and the detection circuit 110 can pass the detection channel Whether the touch key 120 is pressed is determined by changing the capacitance value to ground.

Each touch button 120 is associated with at least part of the functions of the electronic device 100, for example, the touch button 120 can be a switch button (wall switch, wall control switch for electronic equipment and set on the wall, wall controller, setting electronic Switch button, standby button or sleep button on the device, etc.), function switching buttons (for example, the cooking mode of the induction cooker, the cooling mode or heating mode of the air conditioner, the channel switching of the TV), the adjustment button of a specific function (for example, the air conditioner Temperature adjustment button, volume button of TV, power adjustment button of induction cooker) and so on.

In the case where the recognition mode of the touch button is relatively single, if more recognition modes are added, the configuration will be more complicated and the corresponding cost will be higher. Therefore, the embodiment of the present invention provides a series of solutions to realize multiple Modal detection without adding more configuration and cost.

Fig. 2 is a flowchart of steps of a detection method according to an embodiment of the present invention. The detection method of this embodiment can be applied to the detection circuit 110 in FIG. 1, including:

S210: In the first detection mode, detect the capacitance variation state of at least one touch key of the electronic device.

It should be understood that each touch key herein may be a touch key based on the principle of capacitance variation, for example, a touch key based on the principle of self-capacitance detection. For example, each touch key is an example of the touch key 120, and each touch key may have the same model and configuration, or may be different models and configurations.

It should also be understood that the touch key herein may be a touch key based on the principle of capacitance variation, for example, a touch key based on the principle of self-capacitance detection.

It should also be understood that the state of capacitance variation may refer to the variation or disturbance of the capacitance value, or the capacitance variation may refer to other characteristic physical quantities reflecting the variation or disturbance of the capacitance value, for example, a characteristic voltage value or a characteristic current value.

S220: Switch from the first detection mode to the second detection mode when the capacitance change state meets the touch proximity condition.

It should be understood that the touch proximity condition may indicate that the proximity distance to the touch key is less than a preset distance range, for example, 15 cm. The proximity distance to the touch button can also represent the proximity distance to the electronic device. When a target object such as a conductor (for example, a human body) approaches a touch button, it will cause a change in the distribution of the capacitive electrodes of the touch button, thereby causing a disturbance in the capacitance value. By detecting the electrical connection between the circuit and the touch button, it can be detected to this disturbance. Generally, when the proximity distance is large, this disturbance will be smaller than the capacitance change caused when the touch key is pressed. In addition, as the target object approaches the touch key, that is, as the approaching distance becomes smaller, the capacitance variation becomes larger. By setting the capacitance variation threshold indicated by the touch pressing condition, when the target object such as a finger or a human body reaches a preset Within the range of distance, the corresponding capacitance change is detected. Based on the above relationship, the larger the preset distance range, the smaller the capacitance variation and the higher the required detection accuracy. Generally speaking, the capacitance variation threshold indicated by the touch press condition may be greater than the capacitance variation threshold indicated by the touch proximity condition.

S230: In the second detection mode, based on the touch press condition, detect the capacitance change state of at least one touch key, the capacitance change threshold indicated by the touch press condition is greater than the capacitance change threshold indicated by the touch proximity condition.

It should be understood that the capacitance change threshold indicated by the touch press condition is greater than the capacitance change threshold indicated by the touch proximity condition. The variation threshold (that is, the situation where no target object is approaching is compared with the situation where the target object is within the preset distance range) is 2.5C, and the capacitance variation threshold value indicated by the touch proximity condition (that is, the situation where the touch button is not pressed is compared with The touch button is pressed or touched) is 0.5C.

In the solution of the embodiment of the present invention, by setting the capacitance variation threshold indicated by the touch pressing condition to be greater than the capacitance variation threshold indicated by the touch proximity condition, the detection of the proximity operation of the touch key is realized without increasing the complexity of the touch operation. In addition, when the capacitive change state meets the touch proximity condition, switching from the first detection mode to the second detection mode does not need to monitor the states of the two operations at the same time, improving the detection efficiency.

In some other examples, when the capacitance state does not meet the touch proximity condition, the second detection mode is switched to the first detection mode, thereby further ensuring the smoothness of the user's touch operation.

Specifically, when a finger (an example of a target object) approaches the touch key from a distance, the detection circuit detects the capacitance variation state of the target touch key. It should be understood that, in the first detection mode, the detection circuit may perform a monitoring operation when the state of capacitance variation does not meet the touch proximity condition.

When reaching within the preset distance range, the detection circuit switches from the first detection mode to the second detection mode. Then, the detection circuit sends the enabling signal corresponding to the touch proximity condition to the main controller of the electronic device, and the main controller correspondingly executes the control operation corresponding to the enabling signal, for example, controlling at least some functions of the electronic device from The sleep state is switched to the wake state, and these functions are associated with the above-mentioned touch keys.

Alternatively, the sleep state may also be a non-wake-up state such as a low power consumption state or a standby state.

As the finger gets closer to the touch button, when the finger presses the touch button, the detection circuit detects that the capacitance change state meets the touch press condition, and then the detection circuit sends the enable signal corresponding to the touch press condition to the The main controller of the electronic device, the main controller correspondingly executes the control operation corresponding to the enable signal.

It should be understood that, in the second detection mode, the detection circuit can perform a monitoring operation when the state of capacitance variation does not meet the touch press condition.

Further, after the finger completes the pressing or contacting operation, the detection circuit does not meet the touch proximity condition and sends an enabling signal corresponding to the main controller of the electronic device to notify the main controller that the pressing operation is completed.

Furthermore, when the finger leaves the preset distance range, the detection circuit switches from the second detection mode to the first detection mode. The enabling signal corresponding to the detection circuit not meeting the touch proximity condition is sent to the main controller of the electronic device, and the main controller is notified to execute the control operation corresponding to the enabling signal accordingly. Correspondingly, the main controller correspondingly executes the control operation corresponding to the enabling signal, for example, controls at least some functions of the electronic device to switch from the wake-up state to the sleep state, and these functions are associated with the above-mentioned touch keys.

In some other examples, in response to switching from the first detection mode to the second detection mode, the electronic device is controlled to enter a wake-up state from a sleep state, and at the same time, detection based on the touch press condition is started. Alternatively, in response to switching from the second detection mode to the first detection mode, the electronic device is controlled to enter the sleep state from the wake-up state, and at the same time, the detection based on the touch proximity condition is started. Through such a configuration, it is possible to enter a corresponding detection mode through time-division multiplexing to perform a detection process corresponding to a detection condition, so that the configuration of the detection circuit is more concise and efficient.

Combining again the above example where the finger approaches the electronic device from a distance and then presses the touch button and then moves away from the electronic device, without loss of generality, as a response to switching from the first detection mode to the second detection mode, the electronic device is controlled to enter from the sleep state To an example of a wake-up state, a first enable signal may be sent to the main controller of the electronic device in response to switching from the first detection mode to the second detection mode, the first enable signal indicates that the wake-up is associated with at least one touch key function.

As an example of controlling the electronic device to enter the sleep state from the wake-up state in response to switching from the second detection mode to the first detection mode, a preset period of time after switching from the second detection mode to the first detection mode may be When the change state of the internal capacitance does not meet the touch proximity condition, a second enable signal is sent to the main controller of the electronic device, and the second enable signal indicates to make the function associated with the at least one touch key dormant.

Specifically, the second enabling signal may be sent to the main controller of the electronic device in direct response to switching from the second detection mode to the first detection mode. Alternatively, within a preset period of time after switching from the second detection mode to the first detection mode, it is detected whether the capacitance change state does not meet the touch proximity condition, and if within the preset time period, the capacitance change state occurs If the touch proximity condition is met, and then the touch proximity condition is met again, the calculation of the preset time period is restarted. For example, when the fusion detection channel does not detect the touch proximity condition from the beginning, timing can be started based on any first detection period after the second detection period, and the length of the preset period can be an integer multiple of the preset cycle period. When the preset period of integer times arrives, but the touch proximity condition is still not detected, the touch press condition is detected based on an independent detection channel.

In other examples, there are multiple touch keys, and each touch key may correspond to a detection channel, that is, each touch key has its own independent detection channel. The detection circuit may be configured to perform respective pressing operations of the plurality of touch keys in the second detection mode by periodically scanning each independent detection channel.

Without loss of generality, as an example of detecting the capacitance change state of at least one touch key based on the touch pressing condition in the second detection mode, in the second detection mode, based on the respective touch points of a plurality of touch keys, Control the pressing condition and detect the capacitance change state of multiple touch keys.

In addition, the detection method further includes: in a third detection mode, detecting the capacitance change state of the at least one touch key; when the capacitance change state of the at least one touch key in the third detection mode conforms to the When the key is touched, switch from the third detection mode to the first detection mode. For example, the third detection mode can be configured as a button wake-up mode of the electronic device, that is, the monitoring mode of the first detection mode. After at least one button is pressed, the first detection mode of the touch button is awakened. After the mode is awakened, capacitance variation detection is performed based on the first detection mode.

It should be understood that, by switching the touch pressing condition to the touch approaching condition, each independent detection channel can also be used to detect capacitance variation states of multiple touch keys in the first detection mode.

Further, in addition to multiple independent detection channels, a fusion detection channel of multiple independent detection channels can be configured to uniformly detect the capacitance change state of multiple touch keys in the first detection mode, thereby improving touch proximity. State recognition efficiency and recognition range.

Without loss of generality, channel switching is performed periodically between a plurality of independent detection channels and a fusion detection channel formed by the plurality of independent detection channels, wherein the plurality of independent detection channels respectively correspond to a plurality of touch keys for Detection is performed based on respective touch pressing conditions of multiple touch buttons, and the fusion detection channel is used to perform detection based on touch proximity conditions.

Further, in order to periodically perform channel switching between multiple independent detection channels and fusion detection channels formed by multiple independent detection channels, based on a preset period of time, multiple independent detection channels and multiple independent detection channels can be formed Channel switching is performed between the fusion detection channels, wherein, within the preset cycle period, the multiple independent detection channels correspond to multiple first detection periods, the fusion detection channel corresponds to the second detection period, and the multiple first detection periods There is no overlap with the second detection period, thereby further improving the recognition efficiency and recognition range of the touch proximity state, and also ensuring the recognition efficiency of each touch button's respective touch pressing state.

In a word, each independent detection channel and fusion detection channel can be alternately switched, for example, the individual electrical connection with each touch key and the electrical connection with all touch keys can be alternately switched to realize channel switching, and the individual electrical connection is used to perform independent detection For channel detection, the electrical connection of all touch buttons is used to perform fusion detection channel detection.

The channel scanning process will be described in detail below with reference to the example in FIG. 3 . As shown in FIG. 3 , generally, for N touch buttons, the N touch buttons correspond to N independent detection channels. M fusion detection channels may also be configured, and the M fusion detection channels may be obtained by fusing at least part of the detection channels. For example, if one fusion detection channel is configured, N+1 working periods can be configured, corresponding to N independent detection channels and one fusion detection channel respectively, that is to say, the detection circuit can scan based on N+1 working periods .

In this example, N=4, that is, 4 touch buttons. In the second detection mode, touch pressing detection is performed on each touch key. Each cycle of the detection circuit includes the entire working period consisting of the first working period to the fifth working period. Among them, in the first working period to the fourth working period, for the four touch buttons, depending on the physical parameters, models, button functions, etc. of the touch buttons, the touch pressing conditions of each touch button can be set to be different. ; It can also be set to be the same in order to improve the detection efficiency. For the fifth working period, it can be configured as a unified touch proximity condition, especially when the positions of touch cases 1, 2, 3 and 4 are adjacent or close, the configuration of the fusion detection channel can well improve the touch control. The recognition range of the proximity state.

FIG. 4 is a schematic flowchart of a wake-up control process applicable to the detection method in FIG. 2 . Exemplarily, the wake-up control process of FIG. 4 is executed by the detection circuit, including the following steps:

In step S410, start the detection process, and continue to execute S420. For example, the main controller of the electronic device can wake up the detection circuit to start the detection, and can start to collect the capacitance change state in each detection period, and each detection period includes a touch press detection period and a touch proximity detection period. .

In step S420, during the detection period, the capacitance variation detection is performed based on the corresponding detection channel, and the step S430 is continued. For example, the above-mentioned independent detection channel is used for the touch-press detection period, and the above-mentioned fusion detection channel is used for the touch-proximity detection period. In addition, depending on the physical parameters, models, key functions, etc. of the touch keys, the touch pressing conditions of each touch key among the plurality of touch keys may be set to be different, or set to be the same, so as to improve detection efficiency.

In step S430, it is determined whether a human body approach is detected during the touch proximity detection period, if yes, then step S440 is performed; if no, then step S420 is performed. For example, if the capacitance change state meets the touch proximity condition, that is, if the capacitance change indicated by the capacitance change state meets the capacitance change threshold indicated by the touch proximity condition, it is determined that there is a human body approaching; otherwise, it is determined that there is no human body approaching.

In step S440, the main controller of the electronic device is notified that the touch proximity condition is satisfied, and step S420 is executed. For example, the detection circuit sends the enabling signal corresponding to the touch proximity condition to the main controller of the electronic device, and the main controller correspondingly executes the control operation corresponding to the enabling signal, for example, controlling at least some functions of the electronic device from Switch from sleep state to wake state, these functions are associated with the above touch keys

In step S450, the main controller switches the electronic device from the sleep state to the wake-up state, and continues to execute step S460.

In step S460, the wake-up control process is ended, for example, entering the second detection mode to perform detection based on the touch pressing condition; or entering the sleep control process. For the detailed implementation process, reference may be made to the description of the specific example in FIG. 2 above, which will not be repeated here.

FIG. 5 is a structural block diagram of a detection circuit according to another embodiment of the present invention. The detection circuit of this embodiment corresponds to the detection method in Figure 2, including:

The first detection module 510, in the first detection mode, detects the capacitance change state of at least one touch key of the electronic device, and switches from the first detection mode to Second detection mode;

The second detection module 520, in the second detection mode, detects the capacitance change state of the at least one touch key based on the touch press condition, the capacitance change threshold indicated by the touch press condition is greater than the touch Approaching condition indicates capacitance change threshold.

In the solution of the embodiment of the present invention, by setting the capacitance variation threshold indicated by the touch pressing condition to be greater than the capacitance variation threshold indicated by the touch proximity condition, the detection of the proximity operation of the touch key is realized without increasing the complexity of the touch operation. In addition, when the capacitive change state meets the touch proximity condition, switching from the first detection mode to the second detection mode does not need to monitor the states of the two operations at the same time, improving the detection efficiency.

In some other examples, the first detection module 510 is further configured to switch from the second detection mode to the first detection mode when the capacitance state does not meet the touch proximity condition.

In some other examples, at least one touch key includes a plurality of touch keys. The second detection module is specifically used for: in the second detection mode, based on the respective touch pressing conditions of the plurality of touch keys, detecting the state of capacitance variation of the plurality of touch keys.

In some other examples, the detection circuit further includes a channel switching module, configured to: periodically perform channel switching between multiple independent detection channels and a fusion detection channel formed by the multiple independent detection channels. Multiple independent detection channels correspond to multiple touch keys respectively, and are used for detection based on respective touch pressing conditions of the multiple touch keys, and fusion detection channels are used for detection based on touch proximity conditions.

In some other examples, the channel switching module is specifically configured to: perform channel switching between a plurality of independent detection channels and a fusion detection channel formed by a plurality of independent detection channels based on a preset period of time, wherein, within the preset period of time , the plurality of independent detection channels correspond to the plurality of first detection periods respectively, the fusion detection channel corresponds to the second detection period, and the plurality of first detection periods do not overlap with the second detection period.

In some other examples, the detection circuit further includes a control module, and the control module is configured to: respond to switching from the first detection mode to the second detection mode, control the electronic device to enter from the sleep state to the wake-up state, and at the same time start detection.

In some other examples, the control module is specifically configured to: send a first enable signal to the main controller of the electronic device in response to switching from the first detection mode to the second detection mode, the first enable signal indicates that wake-up is related to at least one The function associated with the touch button.

In some other examples, the control module is further configured to: respond to switching from the second detection mode to the first detection mode, control the electronic device to enter the sleep state from the wake-up state, and simultaneously start the detection based on the touch proximity condition.

In some other examples, the control module is specifically configured to: in the case that the capacitance change state does not meet the touch proximity condition within a preset period of time after switching from the second detection mode to the first detection mode, send The main controller of the electronic device sends a second enable signal, and the second enable signal indicates to make the function associated with the at least one touch key dormant.

In some other examples, the detection circuit further includes a third detection module, and the third detection module detects the capacitance variation state of the at least one touch key in the third detection mode; when the at least one touch key is in the Switching from the third detection mode to the first detection mode when the capacitance variation state in the third detection mode meets the touch key condition.

The detection circuit in this embodiment is used to implement the corresponding methods in the above-mentioned multiple method embodiments, and has the beneficial effects of the corresponding method embodiments, which will not be repeated here. In addition, for the function implementation of each module in the detection circuit of this embodiment, reference may be made to the descriptions of corresponding parts in the foregoing method embodiments, which will not be repeated here.

In addition, for the specific implementation of each step in the program, refer to the corresponding descriptions in the corresponding steps and units in the above method embodiments, and details are not repeated here. Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working process of the above-described devices and modules can refer to the corresponding process description in the foregoing method embodiments, and details are not repeated here.

It should be pointed out that, according to implementation requirements, each component/step described in the embodiment of the present invention can be divided into more components/steps, and two or more components/steps or partial operations of components/steps can also be combined into New components/steps to achieve the purpose of the embodiments of the present invention.

The above method according to the embodiment of the present invention can be implemented in hardware, firmware, or as software or computer code that can be stored in a recording medium (such as CD ROM, RAM, floppy disk, hard disk, or magneto-optical disk), or implemented by Computer code downloaded from a network that is originally stored on a remote recording medium or a non-transitory machine-readable medium and will be stored on a local recording medium so that the methods described herein can be stored on a computer code using a general-purpose computer, a dedicated processor, or a programmable Such software processing on a recording medium of dedicated hardware such as ASIC or FPGA. It will be appreciated that a computer, processor, microprocessor controller, or programmable hardware includes memory components (e.g., RAM, ROM, flash memory, etc.) that can store or receive software or computer code that, when When accessed and executed by a processor or hardware, implements the methods described herein. Furthermore, when a general purpose computer accesses code for implementing the methods shown herein, execution of the code transforms the general purpose computer into a special purpose computer for performing the methods shown herein.

Those skilled in the art can appreciate that the units and method steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the embodiments of the present invention.

The above embodiments are only used to illustrate the embodiments of the present invention, rather than to limit the embodiments of the present invention. Those of ordinary skill in the relevant technical field can also make various Changes and modifications, so all equivalent technical solutions also belong to the category of the embodiments of the present invention, and the patent protection scope of the embodiments of the present invention should be defined by the claims.

Claims (13)

1. A detection method, characterized in that, comprising: In the first detection mode, detecting the capacitance change state of at least one touch key of the electronic device; Switching from the first detection mode to the second detection mode when the capacitance change state meets the touch proximity condition; In the second detection mode, the capacitance change state of the at least one touch key is detected based on the touch press condition, and the capacitance change threshold indicated by the touch press condition is greater than the capacitance change indicated by the touch proximity condition threshold. 2. The method according to claim 1, characterized in that the method further comprises: When the capacitance state does not meet the touch proximity condition, switch from the second detection mode to the first detection mode. 3. The method according to claim 2, wherein the at least one touch key comprises a plurality of touch keys; In the second detection mode, detecting the capacitance change state of the at least one touch key based on the touch pressing condition includes: In the second detection mode, based on the respective touch pressing conditions of the plurality of touch keys, the capacitance variation state of the plurality of touch keys is detected. 4. method according to claim 3, is characterized in that, described method also comprises: periodically performing channel switching between a plurality of independent detection channels and a fusion detection channel formed by the plurality of independent detection channels, wherein the plurality of independent detection channels respectively correspond to the plurality of touch keys for Detection is performed based on respective touch pressing conditions of the plurality of touch buttons, and the fusion detection channel is used for detecting based on touch proximity conditions. 5. The method according to claim 4, wherein the periodically performing channel switching between a plurality of independent detection channels and a fusion detection channel formed by the plurality of independent detection channels comprises: Based on a preset period of time, channel switching is performed between a plurality of independent detection channels and a fusion detection channel formed by the plurality of independent detection channels, wherein, within the preset period of time, the plurality of independent detection channels are respectively Corresponding to a plurality of first detection periods, the fusion detection channel corresponds to a second detection period, and there is no overlap between the plurality of first detection periods and the second detection period. 6. The method according to claim 1, further comprising: In response to switching from the first detection mode to the second detection mode, the electronic device is controlled to enter a wake-up state from a sleep state, and at the same time, detection based on the touch press condition is started. 7. The method according to claim 6, wherein the response to switching from the first detection mode to the second detection mode, and controlling the electronic device to enter a wake-up state from a sleep state, comprises: In response to switching from the first detection mode to the second detection mode, sending a first enable signal to the main controller of the electronic device, the first enable signal indicates wake-up and the at least one touch control The function associated with the key. 8. The method according to claim 6, further comprising: In response to switching from the second detection mode to the first detection mode, the electronic device is controlled to enter the sleep state from the wake-up state, and at the same time, detection based on the touch proximity condition is started. 9. The method according to claim 8, wherein in response to switching from the second detection mode to the first detection mode, controlling the electronic device to enter the sleep state from the wake-up state status, including: In the case that the capacitance change state does not meet the touch proximity condition within a preset period after switching from the second detection mode to the first detection mode, send a second command to the main controller of the electronic device An enable signal, the second enable signal indicates to make the function associated with the at least one touch key dormant. 10. The method of claim 1, further comprising: In a third detection mode, detecting the capacitance change state of the at least one touch key; When the capacitive change state of the at least one touch key in the third detection mode meets the touch key condition, switch from the third detection mode to the first detection mode. 11. A detection circuit, characterized in that, comprising: The first detection module, in the first detection mode, detects the capacitance change state of at least one touch key of the electronic device, and switches from the first detection mode to the second detection mode when the capacitance change state meets the touch proximity condition. Two detection modes; The second detection module, in the second detection mode, detects the capacitance change state of the at least one touch key based on the touch press condition, and the capacitance change threshold indicated by the touch press condition is greater than the touch proximity Capacitance change threshold for condition indication. 12. A touch device, characterized in that it comprises: At least one touch key and the detection circuit according to claim 11, the at least one touch key is electrically connected to the detection circuit. 13. An electronic device, characterized in that it comprises: The touch device according to claim 12; A main controller, the main controller is electrically connected to the touch device.

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