CN115244491A

CN115244491A - Capacitive sensor, terminal device, sensor assembly and detection method

Info

Publication number: CN115244491A
Application number: CN202180006916.6A
Authority: CN
Inventors: 倪刚; 郭智; 黄启睿; 张慧敏
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-02-22
Filing date: 2021-02-22
Publication date: 2022-10-25
Also published as: WO2022174455A1

Abstract

The embodiment of the application discloses a capacitive sensor, terminal equipment, a sensor assembly and a detection method, and belongs to the technical field of terminals. Capacitive sensor 1 includes a plurality of first polar plates 2 and a plurality of second polar plates 3, a plurality of first polar plates 2 with a plurality of second polar plates 3 are used for connecting different electrodes, a plurality of first polar plates 2 with a plurality of second polar plates 3 constitute a plurality of polar plate pairs, every polar plate pair in a plurality of polar plate pairs comprises adjacent first polar plate 2 and second polar plate 3, the figure of a plurality of polar plate pairs is greater than or equal to 5, the effective polar plate length of every polar plate pair is greater than 10 with the ratio of polar plate interval, the polar plate width of every polar plate pair is greater than 2 with the ratio of polar plate interval. By adopting the scheme, the operation convenience can be improved.

Description

Capacitive sensor, terminal device, sensor assembly and detection method

Technical Field

The application relates to the technical field of terminals, in particular to a capacitive sensor, terminal equipment, a sensor assembly and a detection method.

Background

With the rapid development of terminal technology, wearable equipment is widely applied. Motion recognition has also been developed and is widely used in wearable devices.

In the related art, the motion recognition is infrared motion recognition or video motion recognition. Under the condition that a user wears the wearable device with one hand, the other hand approaches the wearable device to make a corresponding action, and the wearable device detects the action of the user to trigger and execute corresponding processing.

In the action operation process in the technology, two hands of a user are required to be close to each other, the angle of the wearable device is controlled by the hand wearing the wearable device, the infrared sensor or the camera is aligned to the other hand, and the other hand acts.

Disclosure of Invention

The embodiment of the application provides a capacitive sensor, terminal equipment, a sensor assembly and a detection method, and aims to solve the problem of low operation convenience in the related art.

In a first aspect, a capacitive sensor 1 is provided, where the capacitive sensor 1 includes a plurality of first plates 2 and a plurality of second plates 3, the plurality of first plates 2 and the plurality of second plates 3 are used to connect different electrodes, the plurality of first plates 2 and the plurality of second plates 3 form a plurality of plate pairs, and each plate pair in the plurality of plate pairs is formed by adjacent first plates 2 and second plates 3. The number of the plurality of plate pairs is greater than or equal to 5, the ratio of the effective plate length of each plate pair to the plate distance is greater than 10, and the ratio of the plate width of each plate pair to the plate distance is greater than 2.

According to the scheme shown in the embodiment of the application, when all the first pole plates 2 are connected with the positive electrodes, all the second pole plates 3 can be connected with the negative electrodes, and when all the first pole plates 2 are connected with the negative electrodes, all the second pole plates 3 can be connected with the positive electrodes. Two adjacent and opposite conductor plates for connecting different electrodes can be called a plate pair, and the two conductor plates can be called plates. The distance between the two plates in the plate pair at different positions is equal. The plate spacing of different plate pairs can be the same or different. Different pairs of plates may share a first plate or a second plate. For example, two first plates 2 and two second plates 3, which are alternately arranged, may constitute 3 plate pairs. The effective pole plate length is the length of the mutually opposite parts of the first pole plate 2 and the second pole plate 3 in the pole plate pair.

Capacitive sensor in the above-mentioned scheme, the figure of polar plate pair is greater than number threshold 5, the ratio of effective polar plate length and polar plate interval of every polar plate pair is greater than ratio threshold 10, can make capacitive sensor have enough big basic capacitance value and can be detected by detection circuitry like this, in addition, the ratio of polar plate width and polar plate interval of every polar plate pair is greater than ratio threshold 2, can reduce capacitive sensor's fringing field like this, thereby can reduce the influence of conductor more distant to the capacitance value, reduce capacitive sensor's perception ability to long-distance conductor promptly, and concentrate on the perception to closely the conductor. Consequently, adopt the capacitive sensor in this application embodiment, the characteristics that change of utilization capacitance value along with the change of distance between capacitive sensor and the conductor that can be fine through foretell parameter setting for the distance change to the skin that is close to mutually that capacitive sensor can be better carries out the perception, detects the distance condition of skin and wearing equipment through detecting the capacitance value. When a user wears the terminal equipment to perform some actions, the distance between the capacitance sensor and the skin slightly changes along with the actions of the user, so that the capacitance value changes, and the terminal equipment can perform some specified processing at this time. Therefore, when a user wants to trigger a certain treatment, the user only needs to wear the organ of the terminal equipment to act, if the user wears the terminal equipment by one hand, the other hand is not needed to participate at all at the moment and is in a completely liberated state, and therefore the operation convenience can be improved by adopting the scheme of the application.

In one possible implementation, a plurality of first plates 2 and a plurality of second plates 3 are arranged in parallel to each other so that at least one first plate 2 and at least one second plate 3 can be reused for two plate pairs.

The capacitive sensor 1 may have a double comb structure, and as an example of a specific structure, the capacitive sensor 1 having the double comb structure includes 4

first electrode plates

2 and 4 second electrode plates 3 arranged in a staggered manner from top to bottom, so as to form 7 electrode plate pairs, wherein, when viewed from top to bottom, the first electrode plate and the first second electrode plate form one electrode plate pair, and the first second electrode plate and the second first electrode plate form one electrode plate pair. That is to say the two plate pairs share a second plate. The lower plate pairs also have similar situations that different plate pairs share one plate, which are not listed.

In a possible implementation, the plurality of first plates 2 are in a star-shaped configuration connected to each other.

The capacitive sensor 1 may have a star-shaped structure, as an example of a specific structure, the capacitive sensor 1 having a star-shaped structure with three vertexes includes 3

first electrode plates

2 and 6 second electrode plates 3, the 3 first electrode plates 2 are respectively located in 12-point direction, 4-point direction and 8-point direction, two sides of each first electrode plate 2 are respectively provided with one second electrode plate 3, so that 6 electrode plate pairs can be formed, taking the uppermost 3 electrode plates as an example, the left second electrode plate 3 and the middle first electrode plate 2 form one electrode plate pair, and the right second electrode plate 3 and the middle first electrode plate 2 form one electrode plate pair. That is to say the two plate pairs share a first plate 2. The lower plate pairs also have similar situations that different plate pairs share one plate, which are not listed.

The double comb type structure and the star type structure in the scheme have the characteristics of simple structure and material saving.

In one possible implementation, at least one first plate 2 of the plurality of first plates 2 is disposed between two second plates 3 of the plurality of second plates 3 to form two plate pairs.

This means that at least two plate pairs of the capacitive sensor 1 are multiplexed with one first plate 2. In this way, the space occupation of the capacitive sensor 1 can be reduced.

In a possible implementation, the plurality of first polar plates 2 and the plurality of second polar plates 3 are both made of a flexible conductive material.

According to the scheme shown in the embodiment of the application, the capacitive sensor 1 can be manufactured in a 3D printing mode, the appointed position of equipment or a part needing to be provided with the capacitive sensor can be directly printed, the flexible conductive material can be gold, silver, copper and other metals, and the metal material is printed at the appointed position of the equipment or the part through 3D printing to form the metal film with the preset pattern.

Adopt flexible conducting material to make capacitive sensor 1 in the above-mentioned scheme, no matter be at the soft material like this or on hard material processing capacitive sensor 1 that all can be convenient, can improve the flexibility that capacitive sensor 1 set up.

In one possible implementation, the first and

second plates

2, 3 are each undulated.

In the solution shown in the embodiment of the present application, each first polar plate 2 and each second polar plate may have the same wave radian, and the distances between adjacent polar plates at different positions are the same.

In a second aspect, a terminal device is provided, which comprises a capacitance value detection circuit 7, a processor 8 and a capacitive sensor 1 as in the first aspect and possible implementations thereof. And the capacitance value detection circuit 7 is used for detecting the capacitance value of the capacitive sensor 1 and sending indication information to the processor 8, wherein the indication information is determined according to the capacitance value. And the processor 8 is used for executing corresponding processing based on the indication information.

In the solution shown in the embodiment of the present application, the capacitive sensor 1 may be disposed on a surface of the terminal device, where the surface is a surface close to a side of skin of a user when the terminal device is worn. The capacitance value detection circuit 7 may continuously detect the capacitance value of the capacitive sensor 1, or may start to detect the capacitance value of the capacitive sensor 1 after a predetermined trigger event occurs.

In the above solution, the capacitive sensor 1 adopting the first aspect and the possible implementation manners described above can sense the distance change of the skin of the human body, and cannot be interfered by other conductive objects that are a little far away. Therefore, the action detection or the correct wearing detection can be accurately carried out.

In one possible implementation, the terminal device is a wearable device. The terminal device further comprises a body 4. A groove 6 is provided on the first surface of the body 4, and the capacitive sensor 1 is disposed in the groove 6. The first surface is a surface which is close to one side of the skin of a user when the terminal equipment is worn. This wears to indicate that terminal equipment's conventionality is worn, and terminal equipment is when the conventionality is worn, and skin is pressed close to the first surface, if terminal equipment is intelligent wrist-watch, then the first surface is the back of intelligent wrist-watch, if terminal equipment is intelligent bracelet, then the first surface is the medial surface of intelligent bracelet.

Wherein, the detection face of capacitive sensor 1 is less than the notch of recess 6, and the distance of detection face and the notch of recess 6 is in presetting apart from the within range. The predetermined distance may range from 0.5 to 1mm.

According to the scheme, the terminal device can be a wearing device which is in contact with human skin when being worn, such as an intelligent watch, an intelligent bracelet, an intelligent collar and an intelligent foot ring. For a smart watch, the body 4 of the smart watch may include a dial and a watchband. The bottom surface of the watch face is the surface close to the skin side of the human body when worn, and the bottom surface of the watch band is the surface close to the skin side of the human body when worn. For the smart band, the surface inside the body 4 is the surface next to the skin of the human body when worn.

Taking the intelligent watch as an example, the grooves 6 can be respectively arranged on the bottom surface of the watch dial and the bottom surface of the watch band, or the grooves 6 can be only arranged on the bottom surface of the watch dial or the bottom surface of the watch band. The number and the position of the grooves 6 can be set arbitrarily according to requirements, the number of the grooves 6 can be the same as or different from the number of the capacitive sensors 1, that is, only one capacitive sensor 1 can be arranged in one groove 6, or one groove 6 can also be provided with a plurality of capacitive sensors 1. To take a few specific examples, in the first example, the bottom surfaces of the two watchbands are respectively provided with a plurality of grooves 6, the bottom surface of the dial is provided with a plurality of grooves 6, each groove 6 is provided with one capacitive sensor 1, in the second example, the bottom surfaces of the two watchbands and the bottom surface of the dial are respectively provided with one groove 6, and each groove 6 is provided with a plurality of capacitive sensors 1.

In the above scheme, because the existence of recess 6, capacitive sensor 1's detection face keeps certain distance with human skin all the time, can not contact completely, more is favorable to capacitive sensor 1 like this to perceive its and human skin between the distance change, improves the accuracy that the function triggered.

In one possible implementation, the terminal device is a wearable device. The terminal device further comprises a body 4. The capacitive sensor 1 is buried under a first surface of the body 4. The first surface is a surface which is close to one side of the skin of a user when the terminal equipment is worn.

Wherein, the distance between the detection surface of the capacitance sensor 1 and the surface is within a preset distance range. The predetermined distance may range from 0.5 to 1mm.

The scheme that this application embodiment shows when adding man-hour, can set up the recess on 4 fuselage earlier, through 3D print with capacitive sensor 1 processing to the recess in, then use corresponding material to seal the recess in order to cover capacitive sensor 1 again.

Among the above-mentioned scheme, capacitive sensor 1 can not expose in the air, has better durability, and capacitive sensor 1 can not seen moreover, also can not influence the product outward appearance, the industrial design of the product of being more convenient for.

In a possible implementation manner, the capacitive sensor 1 is configured to change a capacitance value when a user wears the terminal device on a target portion of the user and when the target portion is in motion. And the processor 8 is used for determining a target action instruction corresponding to the action based on the indication information and executing the processing corresponding to the target action instruction.

According to the scheme shown in the embodiment of the application, the processor 8 can directly determine the target action instruction based on the indication information. Alternatively, the processor 8 may determine the target motion based on the indication information, and in determining the target motion instruction based on the target motion, the motion may be recorded by an identifier, for example, the identifier of the swing-up motion is 001, the identifier of the swing-down motion is 002, and so on. In addition, the motion instruction of various motion triggers can be arbitrarily set based on the requirement, for example, the motion of swinging up the arm triggers the instruction of increasing the volume. The corresponding relationship between the action and the action instruction may be defined in different applications, and the target action instruction corresponding to the target action may be determined based on the corresponding relationship between the action and the action instruction of the currently running application, and the processing corresponding to the target action instruction may be executed. Or, the corresponding relationship between the action and the action instruction may be defined in different interfaces of different applications, and a target action instruction corresponding to the target action may be determined based on the corresponding relationship between the action and the action instruction in the current interface of the currently running application, and the processing corresponding to the target action instruction may be executed.

In the above scheme, the capacitive sensor 1 based on the first aspect and the possible implementation manners thereof performs motion recognition, and the motion can be recognized by using the characteristic that the capacitance value of the capacitive sensor 1 changes along with the distance between the human skin and the capacitive sensor 1 in the motion process. When a user wears the terminal equipment to perform some actions, the distance between the capacitance sensor and the skin slightly changes along with the actions of the user, so that the capacitance value changes, and the terminal equipment can perform some specified processing at this time. Therefore, when a user wants to trigger a certain treatment, the user only needs to wear the organ of the terminal equipment to act, if the user wears the terminal equipment by one hand, the other hand is not needed to participate at all at the moment and is in a completely liberated state, and therefore the operation convenience can be improved by adopting the scheme of the application.

In one possible implementation, the indication information is a capacitance value. And the processor 8 is used for determining a target action command according to the pre-stored capacitance value condition and the capacitance value and executing the processing corresponding to the target action command.

The solution shown in the embodiment of the present application may store a correspondence table between capacitance value conditions and action instructions, where the correspondence table includes a plurality of capacitance value conditions, and each capacitance value condition corresponds to at least one action instruction. In this way, the target capacitance value condition that the capacitance value meets can be determined first, and then the target action command corresponding to the target capacitance value condition can be determined. Alternatively, a correspondence table of capacitance value conditions and operations, each of which corresponds to one operation, and a correspondence table of operations and operation commands, each of which corresponds to at least one operation command, may be stored. The action may be recorded with an identification. Therefore, the target capacitance value condition that the capacitance value meets can be determined firstly, then the target action corresponding to the target capacitance value condition is determined, and then the target action command corresponding to the target action is determined.

For an application scene with less actions and simpler operation, the capacitance value condition is adopted to judge the action command, the calculated amount is very small, and the processing efficiency can be effectively improved.

In a possible implementation manner, the capacitive sensor 1 is multiple, the terminal device is a device worn around, and the multiple capacitive sensors 1 are distributed on the terminal device, so that when the terminal device is worn, the multiple capacitive sensors are distributed around the target portion.

According to the scheme shown in the embodiment of the application, the terminal equipment worn around the terminal equipment can be an intelligent watch, an intelligent bracelet and the like, and the capacitive sensor 1 can be uniformly distributed on the terminal equipment at equal intervals.

Under the above-mentioned structure, the user wears the target site of terminal equipment when to the not equidirectional motion, and capacitive sensor 1's capacitance value can demonstrate different characteristics, so this kind of structure can be more convenient for the action discernment.

In one possible implementation, the capacitance value condition is determined according to a first average value of the capacitance values of the capacitive sensors 1 in the first capacitive sensor set and a second average value of the capacitance values of the capacitive sensors 1 in the second capacitive sensor set. The first capacitive sensor set is composed of capacitive sensors 1 located in a first area of the target part when worn, the second capacitive sensor set is composed of capacitive sensors 1 located in a second area of the target part when worn, and the first area is different from the second area.

In one possible case, a certain capacitance condition in the correspondence table is: the difference value of the capacitance values of any two capacitance sensors 1 in the first capacitance sensor set is smaller than the difference threshold value, the difference value of the capacitance values of any two capacitance sensors 1 in the second capacitance sensor set is smaller than the difference threshold value, and the average value of the capacitance values of the capacitance sensors 1 in the first capacitance sensor set is larger than the average value of the capacitance values of the capacitance sensors 1 in the second capacitance sensor set. The first area and the second area are respectively the upper side of the wrist and the lower side of the wrist when the palm faces downwards.

The scheme can ensure that the action detection has higher accuracy.

In a possible implementation manner, the processor 8 is configured to input the instruction information into a recognition model trained in advance, and when an output of the recognition model is a target motion instruction, execute a process corresponding to the target motion instruction.

The recognition model is a machine learning model trained in advance, and a specific model algorithm can be selected at will according to requirements, such as Bayes, decision trees and other algorithms.

According to the scheme, before the identification model is used, technicians can wear the smart watch to make various actions, the capacitance values of all the capacitance sensors 1 are detected and recorded when the actions are taken each time, the capacitance values are arranged according to the preset arrangement sequence among the capacitance sensors to obtain sample capacitance value sequences, the actions of each sample capacitance value sequence during detection are recorded, and preset action instructions corresponding to the actions are recorded and serve as reference action instructions. The recognition model is then trained based on a large number of sequences of sample capacitance values and reference motion commands. After training, the recognition model can accurately recognize the action command based on the capacitance value.

In the above scheme, the machine learning model is adopted for motion recognition, and motion recognition can be performed more conveniently and accurately under the condition that the distribution of the capacitive sensor 1 in the terminal equipment is more complex or the motion is more complex.

In a possible implementation manner, the capacitive sensors 1 are multiple, the terminal device further includes a biological sign sensor 9, and the multiple capacitive sensors 1 are uniformly distributed around the biological sign sensor 9.

According to the scheme shown in the embodiment of the application, the biological sign sensor 9 can be a sensor which can accurately detect corresponding parameters only when being worn by being attached to skin, such as a pulse sensor. The biological sign sensor 9 is electrically connected with the processor 8. Capacitive sensor 1 and biological sign sensor 9 all set up in the fuselage 4 near one side of skin, and all capacitive sensor 1 evenly distributed are on the circumference that uses biological sign sensor 9 as the centre of a circle, and the interval between two arbitrary adjacent capacitive sensor 1 is the same. The number of the capacitive sensors 1 can be set according to actual precision requirements, for example, 4 capacitive sensors can be set, and the capacitive sensors are respectively arranged in the directions of 3 points, 6 points, 9 points and 12 points.

The above scheme can improve the accuracy of biological sign monitoring.

In a possible implementation manner, the processor 8 is configured to determine that the terminal device is not worn correctly according to the capacitance value and a pre-stored capacitance value condition, and send out a prompt message of not being worn correctly.

According to the scheme shown in the embodiment of the application, the situation that the terminal device is not worn correctly can be that corresponding position tightness has a problem, based on the description of the content, the capacitance value of the capacitance sensor 1 in the embodiment of the application can reflect the distance between human skin and the capacitance sensor 1, namely the capacitance value of the capacitance sensor 1 can reflect the tightness of the terminal device at the corresponding position, and then whether the tightness has a problem can be detected through the value range of the capacitance value, and corresponding prompt information can be sent when the problem occurs.

The technician may first determine the location where the terminal device needs to set the capacitive sensor 1, then determine the distance range between the capacitive sensor 1 and the skin when each location is correctly worn, such as 0-0.5mm, and then determine a preset value range of the capacitance value based on the distance range, where the preset value range represents the capacitance value when correctly worn, and store the preset value range in the terminal device. When a user wears the terminal device and needs to monitor biological signs, if heart rate detection is carried out, the terminal device can acquire the capacitance value of each capacitive sensor 1, determine whether the capacitance value of each capacitive sensor 1 is within a preset numerical range, and if the capacitance value of a target capacitive sensor 1 is not within the preset numerical range, the user can determine that the position corresponding to the target capacitive sensor 1 is worn loosely. The time can send out corresponding prompt information. The prompt message can be displayed through a screen, and can also be broadcasted through voice.

The above scheme can improve the accuracy of biological sign monitoring.

In one possible implementation, the processor 8 is further configured to: when a start triggering event is detected, capacitance detection is started.

According to the scheme shown in the embodiment of the application, when the start trigger event is not detected, the processor 8 may control not to supply power to the capacitive sensor 1, so that the capacitance value is not detected, and the capacitance value is detected only after the start trigger event is detected.

The scheme can save electric energy to a certain extent.

In one possible implementation, initiating a triggering event includes: the attitude information of the terminal equipment meets the first attitude condition, or the motion information of the terminal equipment meets the first motion condition, or a starting instruction is received, or the target function is started.

According to the scheme shown in the embodiment of the application, the first posture condition may be that the posture information of the terminal device is changed from the first posture information to the second posture information, or the first posture condition may be that the terminal device keeps the third posture information for a preset time, and the like.

The first motion condition is a condition that motion parameters such as speed, acceleration or displacement of the smart watch are required to meet. For example, within a preset duration, the speed is increased to a preset speed value, the displacement direction is upward, and the corresponding action is that the user quickly raises his hand.

The starting instruction can be an instruction triggered by a user operating a physical key or a virtual control. For example, an upper floating control is arranged in an interface of the terminal device, and when capacitance detection is in a closed state, a start instruction can be issued by clicking the control.

The target function may be a function that requires an action operation or requires correct wear detection, such as a heart rate detection function. The detection of capacitance value can be triggered and started when the heart rate detection function is started, and the heart rate detection function can be periodically and automatically started or started by user operation.

The scheme can conveniently trigger and start capacitance detection.

In one possible implementation, the processor 8 is further configured to: when a closing trigger event is detected, capacitance value detection is stopped.

According to the solution shown in the embodiment of the present application, when the shutdown trigger event is detected, the processor 8 may control not to supply power to the capacitance sensor 1, so that the detection of the capacitance value is stopped.

The scheme can save electric energy to a certain extent.

In one possible implementation, the shutdown triggering event includes: and the attitude information of the terminal equipment meets the second attitude condition, or the motion information of the terminal equipment meets the second motion condition, or a closing instruction is received, or the target function is closed.

In the solution shown in the embodiment of the application, the second posture condition may be that the posture information of the terminal device is changed from the second posture information to the first posture information, or the second posture condition is that the terminal device keeps the fourth posture information for a preset time, and so on.

The second motion condition is a condition that motion parameters such as speed, acceleration or displacement of the terminal device are required to be satisfied. For example, within a preset duration, the speed is increased to a preset speed value, the displacement direction is downward, and the corresponding action is that the user quickly flicks his hand downward.

The closing instruction can be an instruction triggered by a user operating a physical key or a virtual control. For example, an upper floating control is arranged in an interface of the terminal device, and when capacitance value detection is in an activated state, a closing instruction can be issued by clicking the control.

The target function may be a function that requires an action operation or requires correct wear detection, such as a heart rate detection function. The detection of the capacitance value can be triggered and stopped when the heart rate detection function is closed, and the heart rate detection function can be automatically closed or closed by user operation when the preset time is reached after the heart rate detection is finished.

The scheme can conveniently trigger and stop the capacitance detection.

In a possible implementation manner, the terminal device further includes a base, the base is disposed on the surface of the terminal device, and the capacitive sensor 1 is disposed on the base.

The base can be a detachable part in the terminal equipment, so that the base and the capacitive sensor 1 can be detached from the terminal equipment and installed on other terminal equipment, and the use flexibility is strong.

In a third aspect, a sensor assembly of a terminal device is provided, the sensor assembly comprising a base 10 and the capacitive sensor 1 of the first aspect and its possible implementations. The capacitive sensor 1 is disposed on a base 10.

According to the scheme shown in the embodiment of the application, the sensor assembly is a matched part of the terminal equipment, can be installed on the terminal equipment, can also be detached from the terminal equipment, and can be used on different terminal equipment. For example, the user has an intelligent watch and an intelligent bracelet, and still has a sensor assembly, and this user can install sensor assembly on intelligent wrist-watch when using intelligent wrist-watch, can dismantle sensor assembly from intelligent wrist-watch when using intelligent bracelet, installs it on intelligent bracelet. The sensor assembly may be mounted on a skin-contacting surface of the terminal device. The function of the sensor assembly is to perform capacitive sensing. The shape of the base 10 is set according to the distribution requirement of the capacitive sensor 1, and may be a long strip, a circular ring, or the like. The base 10 is made of a flexible material such as rubber, plastic, etc.

In the above solution, the capacitive sensor 1 adopting the first aspect and the possible implementation manners can sense the distance change of the skin of the human body, and cannot be interfered by other conductive objects at a distance slightly far away. Therefore, the action detection or the correct wearing detection can be accurately carried out. Moreover, the sensor assembly is detachably connected with the terminal device, so that the flexibility of the terminal device for motion detection, correct wearing detection and the like can be improved.

In a possible implementation, a groove 11 is provided on the surface of the base 10, and the capacitive sensor 1 is disposed in the groove 11.

Wherein the surface is on the side of the base 10 that is proximate to the skin of the user when the sensor assembly is mounted on the terminal device and the terminal device is worn. The detection surface of the capacitance sensor 1 is lower than the notch of the groove 11, and the distance between the detection surface and the notch of the groove 11 is within a preset distance range. The predetermined distance may range from 0.5 to 1mm.

The scheme that this application embodiment shows, the quantity and the position of recess 6 can set up wantonly according to the demand, and the quantity of recess 6 can also be different with capacitive sensor 1's quantity, can only set up a capacitive sensor 1 in a recess 6 promptly, or a recess 6 also can set up a plurality of capacitive sensor 1. For example, one elongated groove 11 is provided to dispose all the capacitive sensors 1 in the groove 11, or a plurality of square grooves 11 are provided, one capacitive sensor 1 being disposed in each square groove 11.

In one possible implementation, the capacitive sensor 1 is buried under the surface of the base 10.

Wherein the surface is on the side of the base 10 which is proximate to the skin of the user when the sensor assembly is mounted on the terminal device and the terminal device is worn. The distance between the detection surface of the capacitive sensor 1 and the surface is within a preset distance range. The predetermined distance may range from 0.5 to 1mm.

According to the scheme shown in the embodiment of the application, when machining is carried out, the base 10 can be provided with the groove, the capacitive sensor 1 is machined into the groove through 3D printing, and then the groove is sealed by using corresponding materials to cover the capacitive sensor 1.

In a fourth aspect, a detection method is provided, which may be applied to a terminal device including the capacitive sensor 1 of the first aspect and possible implementations thereof, and the method includes: detecting a capacitance value of the capacitive sensor 1; based on the indication information, which is determined according to the capacitance value, corresponding processing is performed.

In one possible implementation, when the terminal device is worn on a target portion of a user, the capacitance value of the capacitive sensor 1 changes according to the action of the target portion. The terminal device specifies a target motion command corresponding to the motion of the target portion based on the instruction information, and executes processing corresponding to the target motion command.

In one possible implementation, the indication information is a capacitance value. And the terminal equipment determines a target action instruction according to the pre-stored capacitance value condition and the capacitance value, and executes processing corresponding to the target action instruction, wherein the target action instruction corresponds to the capacitance value condition.

In one possible implementation manner, the plurality of capacitive sensors 1 are provided, the terminal device is a device worn around the terminal device, and the plurality of capacitive sensors 1 are distributed on the terminal device, so that the plurality of capacitive sensors are distributed around the target portion when the terminal device is worn. The capacitance condition is determined according to a first average value of the capacitance values of the capacitive sensors 1 in the first capacitive sensor set and a second average value of the capacitance values of the capacitive sensors 1 in the second capacitive sensor set.

The first capacitive sensor set is composed of capacitive sensors 1 located in a first area of the target portion when the capacitive sensors are worn, the second capacitive sensor set is composed of capacitive sensors 1 located in a second area of the target portion when the capacitive sensors are worn, and the first area and the second area are different.

In a possible implementation manner, the terminal device inputs the instruction information into a recognition model trained in advance, and when the output of the recognition model is the target action instruction, executes the processing corresponding to the target action instruction.

In a possible implementation manner, the capacitive sensors 1 are multiple, the terminal device further includes a biological sign sensor 9, and the multiple capacitive sensors 1 are uniformly distributed around the biological sign sensor 9. And the terminal equipment determines that the terminal equipment is not worn correctly according to the capacitance value and the prestored capacitance value condition, and sends out prompt information of not wearing correctly.

In a fifth aspect, a computer program product is provided, which comprises computer program code, which, when executed by a terminal device, performs the method of the fourth aspect and its possible implementations.

The technical scheme provided by the application at least comprises the following beneficial effects:

the capacitive sensor in the embodiment of the application, the figure of polar plate pair is greater than figure threshold 5, the ratio of effective polar plate length and polar plate interval of every polar plate pair is greater than ratio threshold 10, can make capacitive sensor have enough big basic capacitance value and can be detected by detection circuitry like this, in addition, the ratio of polar plate width and polar plate interval of every polar plate pair is greater than ratio threshold 2, can reduce capacitive sensor's fringing field like this, thereby can reduce the influence of conductor more distant to the capacitance value, reduce the perception ability of capacitive sensor to long-distance conductor promptly, and concentrate on the perception to closely the conductor. Therefore, adopt the capacitive sensor in this application embodiment, the characteristics that the change of utilization capacitance value along with the change of distance between capacitive sensor and the conductor that can be fine through foretell parameter setting for the distance change to the skin that is close to mutually that capacitive sensor can be better carries out the perception, detects the distance condition of skin and terminal equipment through detecting the capacitance value. When a user wears the terminal equipment to perform some actions, the distance between the capacitance sensor and the skin slightly changes along with the actions of the user, so that the capacitance value changes, and the terminal equipment can perform some specified processing at this time. Therefore, when a user wants to trigger a certain treatment, the user only needs to wear the organ of the terminal equipment to act, if the user wears the terminal equipment by one hand, the other hand is not needed to participate at all at the moment and is in a completely liberated state, and therefore the operation convenience can be improved by adopting the scheme of the application.

Drawings

Fig. 1 is a schematic structural diagram of a capacitive sensor according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a capacitive sensor according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a terminal device provided in an embodiment of the present application;

fig. 5 is a schematic structural diagram of a processing circuit according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a capacitance detection circuit according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a capacitance detection circuit according to an embodiment of the present disclosure;

FIG. 8 is a schematic flow chart illustrating motion detection provided by an embodiment of the present application;

FIG. 9 is a block diagram of a processor according to an embodiment of the present disclosure;

fig. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

FIG. 11 is a schematic diagram illustrating a distribution of capacitance values of a plurality of capacitive sensors during a user action according to an embodiment of the present application;

FIG. 12 is a schematic diagram illustrating a distribution of capacitance values of a plurality of capacitive sensors during a user action according to an embodiment of the present application;

FIG. 13 is a schematic diagram illustrating a distribution of capacitance values of a plurality of capacitive sensors during a user action according to an embodiment of the present application;

FIG. 14 is a schematic diagram illustrating a distribution of capacitance values of a plurality of capacitive sensors during a user action according to an embodiment of the present application;

fig. 15 is a schematic flowchart of correct wearing detection provided in an embodiment of the present application;

FIG. 16 is a block diagram of a processor according to an embodiment of the present disclosure;

fig. 17 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 18 is a schematic structural diagram of a sensor assembly of a terminal device according to an embodiment of the present disclosure;

fig. 19 is a schematic structural diagram of a terminal device with a sensor assembly mounted thereon according to an embodiment of the present application;

fig. 20 is a schematic flowchart of a detection method according to an embodiment of the present application.

Description of the figures

1. Capacitive sensor 2, first polar plate

3. Second polar plate 4, machine body

5. Processing circuit 6, recess

7. Capacitance value detection circuit 8 and processor

9. Biological sign sensor 10, base

11. Groove

Detailed Description

The embodiment of the application provides a capacitive sensor 1.

The capacitive sensor 1 comprises a plurality of first plates 2 and a plurality of second plates 3. The plurality of first electrode plates 2 and the plurality of second electrode plates 3 are used for connecting different electrodes. For example, when all the first plates 2 are connected to the positive electrode, all the second plates 3 may be connected to the negative electrode, and when all the first plates 2 are connected to the negative electrode, all the second plates 3 may be connected to the positive electrode. The plurality of first plates 2 and the plurality of second plates 3 constitute a plurality of plate pairs, and each of the plurality of plate pairs is composed of adjacent first plates 2 and second plates 3. The number of the plurality of plate pairs is greater than or equal to 5, the ratio of the effective plate length of each plate pair to the plate distance is greater than 10, and the ratio of the plate width of each plate pair to the plate distance is greater than 2.

Two adjacent and opposite conductor plates for connecting different electrodes can be called as a plate pair, and the two conductor plates can be called as plates. The distance between the two plates in the plate pair at different positions is equal.

The capacitive sensor 1 may have a double comb type structure or a star type structure, or the like. See fig. 1 and 2. Fig. 1 shows a capacitive sensor 1 having a double comb structure, in which a plurality of first plates 2 and a plurality of second plates 3 are arranged in parallel to each other so that at least one first plate 2 and at least one second plate 3 can be reused for two plate pairs. Fig. 2 shows a star-structured capacitive sensor 1, wherein a plurality of first plates 2 are connected in a star-shaped structure. The capacitive sensor 1 with the two structures has the common characteristic that the capacitive sensor has a plurality of first polar plates 2 and a plurality of second polar plates 3 which form a plurality of polar plate pairs. The first polar plate 2 and the second polar plate 3 keep a certain distance and are not contacted. In fig. 1 and 2, a plurality of first electrode plates 2 are connected to positive electrodes, and a plurality of second electrode plates 3 are connected to negative electrodes.

Each pole plate pair consists of a first pole plate 2 and a second pole plate 3. At least one first polar plate 2 of the plurality of first polar plates 2 is arranged between two second polar plates 3 of the plurality of second polar plates 3 to form two polar plate pairs. That is, different plate pairs may share a first plate 2 or a second plate 3. For example, the capacitive sensor 1 of the double comb structure shown in fig. 1 includes 4

first plates

2, 4 second plates 3, and 7 plate pairs, where, when viewed from top to bottom, the first plate and the first second plate form one plate pair, and the first second plate and the second first plate form one plate pair, that is, the two plate pairs share one second plate, and the lower part of the figure is similar to the above, which is not listed. For another example, the capacitive sensor 1 in the star-shaped structure shown in fig. 2 includes 3

first plates

2, 6

second plates

3, and 6 plate pairs, taking the uppermost 3 plates as an example, the left second plate 3 and the middle first plate 2 form one plate pair, and the right second plate 3 and the middle first plate 2 form one plate pair, that is, the two plate pairs share one first plate 2, and the same applies to the lower part of the figure, which is not listed.

In the capacitive sensor 1, the plurality of first electrode plates 2 and the plurality of second electrode plates 3 may be both wavy and straight.

The capacitive sensor 1 can be manufactured by 3D printing, the designated position of the device or component to be provided with the capacitive sensor can be directly printed, the material can be flexible conductive material, such as gold, silver, copper, etc., the metal material is printed on the designated position of the device or component by 3D printing to form a metal film with a predetermined pattern, and fig. 1 and 2 show the patterns of two capacitive sensors.

Referring to fig. 1, the effective plate length is the length of the mutually facing portion of the first plate 2 and the second plate 3 in the plate pair, and the plate width is the width in the film plane. In designing the capacitive sensor 1, the first plates 2 and the second plates 3 may be arranged to have equal widths, for example, a plate width of 100 μm. It is also possible to arrange all plate pairs to have equal plate spacing, i.e. equal distance between all adjacent plates, e.g. 40 μm.

In order to enable the detection circuit to better detect the capacitance value of the capacitive sensor 1, the number of the pole plate pairs and the ratio of the length of the effective pole plate to the distance between the pole plates are increased, so that the basic capacitance value of the capacitive sensor 1 can be increased, and when the number of the pole plate pairs is more than or equal to 5 and the ratio of the length of the effective pole plate to the distance between the pole plates is more than 10, the basic capacitance value can meet the detection requirement. In order to reduce the influence of a conductor at a longer distance on a capacitance value and increase the ratio of the width of the polar plate to the distance between the polar plates, the fringe field of the capacitive sensor 1 can be reduced, so that the sensing capability of the capacitive sensor 1 on a conductor at a long distance (such as the head of a user and the hands of other people) is reduced, when the ratio of the width of the polar plates to the distance between the polar plates is greater than 2, the capacitive sensor 1 can only sense the distance of the skin close to the capacitive sensor, and the sensing on other conductors can be ignored.

Adopt the capacitive sensor in this application embodiment, the characteristics that utilize the capacitance value that can be fine and change along with the change of distance between capacitive sensor and the conductor through foretell parameter setting for the distance change to the skin that is close to mutually that capacitive sensor can be better carries out the perception, detects skin and terminal equipment's distance condition through detecting the capacitance value. When a user wears the terminal equipment to perform some actions, the distance between the capacitance sensor and the skin slightly changes along with the actions of the user, so that the capacitance value changes, and the terminal equipment can perform some specified processing at the moment. Therefore, when a user wants to trigger a certain treatment, the user only needs to wear the organ of the terminal equipment to act, if the user wears the terminal equipment by one hand, the other hand is not needed to participate at all at the moment and is in a completely liberated state, and therefore the operation convenience can be improved by adopting the scheme of the application.

The embodiment of the present application further provides a terminal device, as shown in fig. 3, the terminal device includes a body 4, a processing circuit 5, and a capacitive sensor 1. The capacitive sensor 1 is disposed on the body 4.

Each terminal device may include one or more capacitive sensors 1, and the number of capacitive sensors 1 is set according to actual detection requirements. For example, to the wearing equipment of annular, like intelligent wrist-watch, intelligent bracelet, can set up a plurality of capacitive sensor, with a plurality of capacitive sensor 1 evenly distributed in wearing equipment's inboard, perhaps, can set up even a plurality of capacitive sensor 1 around certain biological sign sensor of wearing equipment. The capacitive sensor 1 is arranged close to the surface of the terminal device in contact with the skin of a human body. For a terminal device which can be worn on both sides, one or more capacitive sensors 1 can also be arranged on both sides respectively.

Terminal equipment can be when dressing with there being the wearing equipment of contact of human skin, like intelligent wrist-watch, intelligent bracelet, intelligent neck ring, intelligent foot ring etc.. In this embodiment, the smart watch is taken as an example to perform the scheme description, and other situations are similar to the above and will not be described again.

Optionally, as shown in fig. 4, a groove 6 may be disposed on the surface of the body 4, the capacitive sensor 1 is disposed in the groove 6, the detection surface of the capacitive sensor 1 is lower than the notch of the groove 6, and the distance between the detection surface and the notch of the groove 6 is within a preset distance range. The surface may be a surface of the terminal device that is adjacent to the skin of the user when the terminal device is worn.

The body 4 of the smart watch may include a dial and a watch band. The bottom surface of the watch face is the surface close to the skin side of the human body when worn, and the bottom surface of the watch band is the surface close to the skin side of the human body when worn. The grooves 6 can be respectively arranged on the bottom surface of the dial and the bottom surface of the watchband, or the grooves 6 can be only arranged on the bottom surface of the dial or the bottom surface of the watchband. The number and the position of the grooves 6 can be set arbitrarily according to requirements, the number of the grooves 6 can be the same as or different from the number of the capacitive sensors 1, that is, only one capacitive sensor 1 can be arranged in one groove 6, or one groove 6 can also be provided with a plurality of capacitive sensors 1. To take several specific examples, in the first example, the bottom surfaces of the two watchbands are respectively provided with a plurality of grooves 6, the bottom surface of the dial plate is provided with a plurality of grooves 6, each groove 6 is provided with one capacitive sensor 1, in the second example, the bottom surfaces of the two watchbands and the bottom surface of the dial plate are respectively provided with one groove 6, and each groove 6 is provided with a plurality of capacitive sensors 1.

In addition, for the smart band, the surface inside the body 4 is the surface next to the skin side of the human body when worn.

The capacitive sensor 1 can be printed in the groove 6 in a 3D printing manner, the material can be conductive material such as gold, silver, copper, etc., and the metal material is printed at the bottom of the groove 6 by 3D printing to form a metal film with a predetermined pattern, which can be seen in fig. 1 and 2.

Or alternatively, the capacitive sensor 1 may be embedded below the surface of the body 4, and the distance between the detection surface of the capacitive sensor 1 and the surface is within a preset distance range. The surface may be the surface of the terminal device that is adjacent to the skin of the user when the terminal device is worn.

When processing, can set up the recess on fuselage 4 earlier, process capacitive sensor 1 to the recess through 3D printing, then use corresponding material to seal the recess in order to cover capacitive sensor 1 again. Therefore, the capacitive sensor 1 is not exposed in the air, so that the capacitive sensor has better durability, and the capacitive sensor 1 cannot be seen, namely the appearance of a product cannot be influenced, so that the industrial design of the product is more convenient.

Based on the above description of the capacitive sensor 1, the capacitive sensor 1 adopted in the embodiment of the present application has a feature that: the capacitance value changes with the distance between the detection surface of the capacitive sensor 1 and the skin. The detection surface of the capacitive sensor 1 is the surface of the capacitive sensor 1 closest to the skin. When skin is close to the detection surface of the capacitance sensor 1, the capacitance value of the capacitance sensor 1 is influenced by the capacitance of the human body to change when the skin enters a certain distance range, and if the skin of the human body continues to be close to the detection surface, the capacitance value is increased along with the reduction of the distance, namely, the capacitance value is negatively related to the distance. The groove 6 is arranged to better play the characteristic, the capacitance sensor 1 is sunk in the groove 6, the distance between the detection surface and the notch is within a preset distance range, and the distance range can be generally 0.5-1mm. Like this, when the user wore the intelligent wrist-watch and the hand was in the state of stewing, direct contact can not be between skin and the detection face of capacitive sensor 1. When the hand takes place the motion, human skin can take place slight change with the laminating degree of fuselage 4 different positions, for example, when the hand moves left, the laminating degree between wrist left side skin and the left side watchband bottom surface can increase, and partial skin is pressed into recess 6 back, and the laminating degree of wrist right side skin and right side watchband bottom surface can reduce and can separate even. In this case, the distances between the skin at different positions and the detection surface of the capacitive sensor 1 change differently, and the capacitance value of the capacitive sensor 1 at the corresponding position also changes. That is, the distance between the skin and the detection surface of the capacitance sensor 1 can be detected by detecting the capacitance value, and further, the operation detection, the correct wearing detection, and the like can be realized.

Every capacitive sensor 1 respectively with processing circuit 5 electric connection, to capacitive sensor 1 on the watchband bottom surface, electric connection's wire can set up in the watchband, to capacitive sensor 1 on the dial plate bottom surface, electric connection's wire can pass the shell. Based on the electrical linkage between the capacitive sensor 1 and the processing circuit 5, the processing circuit 5 can be used to detect the capacitance value of the capacitive sensor 1, and perform corresponding processing based on the capacitance value of the capacitive sensor 1.

A specific method for performing the corresponding processing based on the capacitance value will be described in detail later, and the internal structure of the processing circuit 5 will be described.

As shown in fig. 5, the processing circuit 5 may include a capacitance value detection circuit 7 and a processor 8. The capacitance value detection circuit 7 is configured to detect a capacitance value of the capacitive sensor 1 and send instruction information to the processor 8, where the instruction information is determined according to the capacitance value. The processor 8 is used for executing corresponding processing based on the indication information.

The indication information may be a capacitance value, or other information whose values correspond to different capacitance values one to one, for example, indication information a corresponds to capacitance value 1, indication information B corresponds to capacitance value 2, and so on. In the embodiment of the present application, the scheme is described in detail by taking the indication information as an example of the capacitance value, and other situations are similar and will not be described again.

The processor 8 may be a Central Processing Unit (CPU). Next, various possibilities of the capacitance value detection circuit 7 will be explained.

In a possible implementation, the processing circuit 5 includes a capacitance detection circuit 7, and the capacitance detection circuit 7 includes at least one detection sub-circuit. Each detection sub-circuit is electrically connected with one capacitive sensor 1 respectively and is used for detecting the capacitance value of the corresponding capacitive sensor 1. Each detection sub-circuit may further include an analog signal detection circuit and an analog-to-digital converter, the analog signal detection circuit is electrically connected to the capacitive sensor 1, the analog signal detection circuit may output an analog signal of a voltage value or a current value, the analog signal is used to indicate a capacitance value of the capacitive sensor 1, and when the capacitance value of the capacitive sensor 1 changes, the voltage value or the current value output by the analog signal detection circuit also changes correspondingly. The analog signal of the voltage value or the current value is input to an analog-to-digital converter and converted into a digital signal, which can represent the capacitance value. The capacitance value detection circuit 7 may further include a signal transmission circuit, each detection sub-circuit is electrically connected to the signal transmission circuit, and transmits a digital signal for reflecting a capacitance value to the signal transmission circuit, and the signal transmission circuit transmits the digital signal to the processor 8. When there are a plurality of capacitive sensors 1, the signal transmission circuit may transmit the digital signals of the capacitance values of the plurality of capacitive sensors 1 to the processor 8 in a time division multiplexing manner, or may encode the digital signals of the capacitance values of the plurality of capacitive sensors 1 in a Code Division Multiple Access (CDMA) manner and transmit the encoded digital signals to the processor 8. The structure and the corresponding processing mode can reduce the occupation of pins of the processor 8. The structure of the capacitance value detection circuit may be as shown in fig. 6.

In another possible implementation manner, the processing circuit 5 includes at least one capacitance value detection circuit 7, and each capacitance value detection circuit 7 is electrically connected to one capacitive sensor 1 respectively, and is configured to detect a capacitance value of the corresponding capacitive sensor 1. Each capacitance detection circuit 7 is electrically connected to the processor 8. Each capacitance detection circuit 7 may further include an analog signal detection circuit and an analog-to-digital converter, the analog signal detection circuit is electrically connected to the capacitance sensor 1, the analog signal detection circuit may output an analog signal of a voltage value or a current value, the analog signal is used for reflecting the capacitance value of the capacitance sensor 1, and when the capacitance value of the capacitance sensor 1 changes, the voltage value or the current value output by the analog signal detection circuit also changes correspondingly. The analog signal of the voltage value or the current value is input to an analog-to-digital converter and converted into a digital signal, which can represent the capacitance value. The analog to digital converter sends the digital signal to the processor 8. The structure of the capacitance value detection circuit may be as shown in fig. 7.

The function of the processing circuit 5 is described below. Based on the above structural features of the terminal device, the processing circuit 5 is configured to detect the capacitance value of the capacitive sensor 1, and execute corresponding processing based on the capacitance value of the capacitive sensor 1. There are many possibilities for the specific processing performed by the processing circuit 5 for different application scenarios, and several specific processing are given below.

Processing one, detecting the action.

The processing flow of motion detection may include the following steps as shown in fig. 8: 801, collecting a capacitance value of a capacitance sensor; 802, determining a target motion command corresponding to the motion of the target portion based on the capacitance value; 803, the process corresponding to the target action command is executed. Wherein step 801 may be performed by the capacitive sensor 1 and the capacitance value detection circuit 7, and steps 802 and 803 may be performed by the processor 8. The processor 8 may include a motion recognition module and an execution module, as shown in fig. 9, the motion recognition module is configured to determine a corresponding target motion instruction based on the capacitance value of the capacitance sensor, and the execution module is configured to execute a process corresponding to the target motion instruction. Wherein the target part is a part of the terminal device worn by the user.

The target action instruction is an instruction that triggers execution of processing, such as a volume-up instruction, a volume-down instruction, or the like. The processor 8 may directly determine the target action instruction based on the capacitance value. Alternatively, the processor 8 may first determine the target motion based on the capacitance value, and after determining the target motion command based on the target motion, the motion may be recorded with a flag, for example, the flag for the swing-up motion is 001, the flag for the swing-down motion is 002, and so on. In the embodiment of the present application, the scheme is described in detail by taking an example that the processor determines the target action first and then determines the corresponding target action instruction, and other situations are similar to the above and are not described again.

The motion instruction triggered by various motions can be set arbitrarily based on requirements, for example, the motion of swinging the arm upwards triggers an instruction for increasing the volume, the motion of swinging the arm downwards triggers an instruction for decreasing the volume, or the motion of swinging the arm to the right triggers the smart watch to send a fast forward instruction to the television, and the like. The corresponding relationship between the action and the action command may be defined in different applications, and the target action command corresponding to the target action may be determined based on the corresponding relationship between the action and the action command of the currently running application, and the processing corresponding to the target action command may be executed. Or, the corresponding relationship between the action and the action instruction may be defined in different interfaces of different applications, and the target action instruction corresponding to the target action may be determined based on the corresponding relationship between the action and the action instruction in the current interface of the currently running application, and the processing corresponding to the target action instruction may be executed.

Based on wearing equipment who wears around, like intelligent wrist-watch, intelligent bracelet etc. can detect more various actions, this kind of wearing equipment can have following structural feature: the plurality of capacitive sensors 1 are distributed on the terminal device such that when the terminal device is worn, the plurality of capacitive sensors are distributed around a target portion of a user. The target part is a part where the user wears the terminal device.

As shown in fig. 10, the terminal device includes a plurality of capacitive sensors 1, a body 4 has a ring structure, the plurality of capacitive sensors 1 are uniformly distributed on the body 4, a number a to N is provided for each of the plurality of capacitive sensors 1, the distribution of the capacitive sensors 1 is illustrated in the figure, and other components are not all shown in the figure. The plurality of capacitive sensors 1 may be uniformly arranged on the terminal device in the circumferential direction, specifically, may be arranged in a groove on the inner surface of the ring body 4, or may be embedded in a shallow layer on the inner surface of the ring body 4, or may be directly arranged on the inner surface of the ring body 4.

Based on foretell structural feature, under the state of wearing intelligent wrist-watch, user's arm is waved towards arbitrary direction, can make the skin of motion direction one side and the distance of a plurality of corresponding capacitive sensor 1 become more close, and corresponding capacitance value will increase, and the skin of motion direction opposite direction one side and the distance of a plurality of corresponding capacitive sensor 1 become farther, and corresponding capacitance value will reduce. Next, the distribution of capacitance values of the respective capacitance sensors 1 during operation will be described with respect to the mode of providing the capacitance sensors 1 shown in fig. 10, taking an example in which a smart watch is worn on the right hand, the dial is on the back of the wrist, and the palm of the hand is downward during operation. In the case of upward swing, the distribution of the detected capacitance values of the respective capacitance sensors 1 may be as shown in fig. 11, in the case of downward swing, the distribution of the detected capacitance values of the respective capacitance sensors 1 may be as shown in fig. 12, in the case of leftward swing, the distribution of the detected capacitance values of the respective capacitance sensors 1 may be as shown in fig. 13, and in the case of rightward swing, the distribution of the detected capacitance values of the respective capacitance sensors 1 may be as shown in fig. 14.

Based on the characteristics, a corresponding judgment method can be designed, and the action of the user is judged based on the detection of the capacitance value.

Several possible action determination approaches are given below.

The operation determination method (one) sets a corresponding capacitance value condition for each operation, and determines the corresponding operation based on the condition that the detected capacitance value satisfies.

Accordingly, the processing circuit 5 is configured to determine a target operation corresponding to a target capacitance value condition that the capacitance value of the capacitive sensor 1 satisfies, based on a correspondence relationship between operations and capacitance value conditions stored in advance.

The skilled person can set the kind of the motion based on the product requirement, and design the distribution of the capacitive sensor 1, and further set the capacitance value condition corresponding to each motion. To this kind of annular wearing equipment of intelligence wrist-watch or intelligent bracelet, can set up a plurality of capacitive sensor 1 on the medial surface of annular, corresponding action can include upwards swing the arm, swing the arm downwards, swing the arm left, swing at least one in the arm right, the capacitance value condition that every kind of action corresponds can be as follows:

the capacitance value condition corresponding to the upward swing arm is as follows: the difference value of the capacitance values of any two capacitance sensors 1 in the first capacitance sensor set is smaller than the difference threshold value, the difference value of the capacitance values of any two capacitance sensors 1 in the second capacitance sensor set is smaller than the difference threshold value, and the average value of the capacitance values of all the capacitance sensors 1 in the first capacitance sensor set is larger than the average value of the capacitance values of all the capacitance sensors 1 in the second capacitance sensor set.

The capacitance value condition corresponding to downward swing is as follows: the difference value of the capacitance values of any two capacitance sensors 1 in the first capacitance sensor set is smaller than the difference threshold value, the difference value of the capacitance values of any two capacitance sensors 1 in the second capacitance sensor set is smaller than the difference threshold value, and the average value of the capacitance values of all the capacitance sensors 1 in the first capacitance sensor set is smaller than the average value of the capacitance values of all the capacitance sensors 1 in the second capacitance sensor set.

The capacitance value condition corresponding to swinging the arm to the left is as follows: the difference value of the capacitance values of any two capacitance sensors 1 in the third capacitance sensor set is smaller than the difference threshold value, the difference value of the capacitance values of any two capacitance sensors 1 in the fourth capacitance sensor set is smaller than the difference threshold value, and the average value of the capacitance values of the capacitance sensors 1 in the third capacitance sensor set is larger than the average value of the capacitance values of the capacitance sensors 1 in the fourth capacitance sensor set.

The capacitance condition corresponding to swinging the arm to the right is as follows: the difference value of the capacitance values of any two capacitance sensors 1 in the third capacitance sensor set is smaller than the difference threshold value, the difference value of the capacitance values of any two capacitance sensors 1 in the fourth capacitance sensor set is smaller than the difference threshold value, and the average value of the capacitance values of the capacitance sensors 1 in the third capacitance sensor set is smaller than the average value of the capacitance values of the capacitance sensors 1 in the fourth capacitance sensor set.

The first capacitive sensor set is composed of capacitive sensors 1 located in a first area of the target part when worn, the second capacitive sensor set is composed of capacitive sensors 1 located in a second area of the target part when worn, and the first area is different from the second area. The third capacitive sensor set is composed of capacitive sensors 1 located in a third area of the target part when the capacitive sensor set is worn, the fourth capacitive sensor set is composed of capacitive sensors 1 located in a fourth area of the target part when the capacitive sensor set is worn, and the third area is different from the fourth area. In particular, the first and second regions may be opposite sides of the wrist, such as an upper side of the wrist and a lower side of the wrist, and the third and fourth regions may be opposite sides of the wrist, such as a left side of the wrist and a right side of the wrist.

Taking the case of 14 capacitive sensors shown in fig. 10 as an example, the above-mentioned several sets of capacitive sensors may be arranged as follows (see fig. 10):

the first capacitive sensor set comprises capacitive sensors D-J, the second capacitive sensor set comprises capacitive sensors A-C and K-N, the third capacitive sensor set comprises capacitive sensors A-G, and the fourth capacitive sensor set comprises capacitive sensors H-N.

Setting (B), considering that capacitance values of some capacitance sensors in critical positions may not well meet the capacitance value conditions, such as capacitance sensors a, N, G, H and the like are not sensitive to left and right swing, and also such as capacitance sensors D, K and the like are not sensitive to up and down swing, it may be set that the first capacitance sensor set includes capacitance sensors F, G, H, I, the second capacitance sensor set includes capacitance sensors a, B, M, N, the third capacitance sensor set includes capacitance sensors C, D, E, F, and the fourth capacitance sensor set includes capacitance sensors I, J, K, L. In this arrangement, since some of the capacitance sensors at critical positions are eliminated from the set, it is also possible to reduce a motion detection error caused by wearing deviation.

In the description of the smart watch or the prompt message displayed by the smart watch, the user may be informed of a specific wearing position and the palm orientation of the user when the user acts, for example, the user is informed of wearing the smart watch outside the right hand and acting with the palm facing downward, this example is matched with the setting (a) and the setting (b), and certainly, the user may be informed of the specific wearing position and the palm orientation in other manners, and the corresponding capacitance sensor sets may be adjusted accordingly at any time, which is not listed here.

In addition, the user may not be required to adopt a specified wearing position and palm orientation. The wearing position detection can be performed before the action detection, the current wearing position of the smart watch is determined, namely, whether the hand wearing the smart watch is the left hand or the right hand is determined, and whether the dial plate is positioned on the outer side or the inner side of the wrist is determined. Then, a palm orientation of a hand of the user wearing the smart watch is determined. Then, based on the correspondence relationship between the previously stored wearing position, palm orientation, and motion and capacitance value condition, the target motion corresponding to the target capacitance value condition satisfied by the current wearing position, palm orientation of the hand corresponding to the current wearing position, and capacitance value of the capacitive sensor 1 is determined. In this correspondence, a corresponding set of capacitive sensors may be set for each capacitive value condition, respectively. Here, the description will be continued by using the example of the 14 capacitance sensors described above, specifically as follows.

The wearing position is the outside of the right wrist, the palm orientation is vertical downward, then in the above capacitance value condition, the first capacitive sensor set includes capacitive sensor F, G, H, I, the second capacitive sensor set includes capacitive sensor A, B, M, N, the third capacitive sensor set includes capacitive sensor C, D, E, F, the fourth capacitive sensor set includes capacitive sensor I, J, K, L.

The wearing position is the inner side of the wrist of the right hand, the palm faces vertically downwards, in the capacitance condition, the first capacitance sensor set comprises capacitance sensors A, B, M and N, the second capacitance sensor set comprises capacitance sensors F, G, H and I, the third capacitance sensor set comprises capacitance sensors I, J, K and L, and the fourth capacitance sensor set comprises capacitance sensors C, D, E and F.

There are many other wearing positions and orientations of the palm, and the concept of the capacitive sensor assembly is similar to the two above-mentioned cases, which are not listed here.

The manner of determining the wearing position and the palm orientation is described below.

First, the wearing position is detected.

In the mode (a), the wearing position is determined based on the parameter values output by the sensors such as the gyroscope and/or the speed sensor and the like and the prestored reference parameter values, which will be described below by taking the gyroscope as an example, and other situations are similar to the above and will not be described again.

The technician performs data acquisition a plurality of times, and each data acquisition wears the smart watch in a wearing position, such as the outer side of the left wrist, the inner side of the left wrist, the outer side of the right wrist and the inner side of the right wrist. After wearing the smart watch, a technician may perform an action of lifting the watch, and collect a series of parameter values output by the gyroscope during the action, for example, the duration of the whole action process is 1 second, and the parameter values output by the gyroscope every 100 milliseconds are collected. Therefore, for each wearing position, a series of parameter values output by the gyroscope can be obtained, and the series of parameter values can be used as a reference for subsequent comparison with the parameter values output by the gyroscope and can be called as a reference gyroscope parameter value sequence. Thus, a correspondence relationship of the wearing position and the reference gyro parameter value sequence can be established. In the correspondence, one wearing position may correspond to one or more reference gyro parameter value sequences.

In the process of using the intelligent watch by a user, the intelligent watch can obtain gyroscope parameter values in real time, a gyroscope parameter value sequence of a period of time (the period of time is equal to the acquisition period of the reference gyroscope parameter value sequence, for example, 1 second) is compared with each reference gyroscope parameter value sequence, the matching degree is calculated, and if the matching degree of the target reference gyroscope parameter value sequence and the gyroscope parameter value sequence is greater than a preset threshold value, a target wearing position corresponding to the target reference gyroscope parameter value sequence is determined in the corresponding relation, namely the current wearing position of the intelligent watch. In order to ensure the accuracy of the wearing position determination, the detection result of the wearing positions for multiple times can be obtained based on the above manner, and the wearing position detected for the times exceeding the threshold value is determined as the current wearing position of the smart watch.

In the mode (b), the wearing position is determined based on the parameter values output by the sensors such as the gyroscope and/or the speed sensor and the machine learning model, the gyroscope is taken as an example, and other situations are similar to the gyroscope and are not described again.

When a user wears and uses the intelligent watch, the intelligent watch can acquire gyroscope parameter values in real time, a gyroscope parameter value sequence with a certain duration (such as 1 second) is input into the wearing position detection model, and the wearing position is output, namely the current wearing position of the intelligent watch.

The wearing position detection model is a machine learning model trained in advance, a specific model algorithm can be selected randomly according to requirements, and the wearing position detection model is not limited in the application.

Before the wearing position detection model is used, a large number of sample gyroscope parameter value sequences can be obtained, the actual wearing position corresponding to each sample gyroscope parameter value sequence is obtained and serves as a reference wearing position, and the wearing position detection model is trained on the basis of the sample gyroscope parameter value sequences and the reference wearing position.

Then, after the wearing position is detected, the palm orientation of the hand corresponding to the wearing position may be further determined. The most basic orientation of the palm can include the palm downward direction and the palm upward direction, and can also include the palm leftward direction, the palm rightward direction and the like.

The gyroscope parameter values corresponding to different palm orientations at each wearing position can be detected in advance, and the corresponding relation between the wearing position, the palm orientation and the gyroscope parameter values is obtained and stored. After the wearing position is detected, the corresponding palm orientation is searched in the corresponding relation based on the detected current wearing position and the current gyroscope parameter value.

In addition, the palm orientation may also be undetected, and the palm orientation designated when the user performs the action operation, such as palm-down, may be directly notified in the description of the smart watch or in the prompt message displayed by the smart watch.

The second operation determination method identifies an operation corresponding to the detected capacitance value based on the machine learning model.

Correspondingly, the processor 8 is configured to input the instruction information into a recognition model trained in advance, and execute a process corresponding to the target motion command when the output of the recognition model is the target motion command.

The recognition model is a machine learning model trained in advance, and a specific model algorithm can be selected at will according to requirements, such as Bayes, decision trees and other algorithms, which are not limited in the present application. The output of the recognition model can be different action instructions or no instruction.

Before the recognition model is used, a technician can wear the smart watch to make various actions, the capacitance values of all the capacitance sensors 1 are detected and recorded when the technician does the actions each time, the capacitance values are arranged according to a preset arrangement sequence among the capacitance sensors to obtain sample capacitance value sequences, the actions of each sample capacitance value sequence during detection are recorded, and preset action instructions corresponding to the actions are recorded and serve as reference action instructions. The recognition model is then trained based on a large number of sequences of sample capacitance values and reference motion commands. After training, the recognition model can accurately recognize the action command based on the capacitance value.

And secondly, correct wearing detection.

The process flow of correct wearing detection may include the following steps as shown in fig. 15: 1501, collecting the capacitance value of the capacitance sensor; 1502, determining that the terminal device is not worn correctly based on the capacitance value of the capacitance sensor; 1503, it issues a message indicating that the wearing is not correct. Step 1501 may be performed by the capacitive sensor 1 and the capacitive value detection circuit 7, and

steps

1502 and 1503 may be performed by the processor 8. The processor 8 may include a correct wearing determination module and an execution module, as shown in fig. 16, the correct wearing determination module is configured to determine that the terminal device is not correctly worn based on the capacitance value of the capacitance sensor, and the execution module is configured to send out a prompt message that the terminal device is not correctly worn.

Generally, the most common scene of correctly wearing and detecting is whether the position of detecting a certain biological sign sensor is flat attached to the skin, and the corresponding wearable device can have the following structural characteristics: as shown in fig. 17, the terminal device includes a plurality of capacitive sensors 1, the terminal device further includes a biological sign sensor 9, and the plurality of capacitive sensors 1 are uniformly distributed around the biological sign sensor 9. The distribution of the capacitive sensor 1 and the positional relationship with the biological sign sensor 9 are illustrated, and the other components are not all represented in the figure.

The biological sign sensor 9 can be a sensor which can accurately detect corresponding parameters only by being worn by being attached to the skin, such as a pulse sensor. The biological sign sensor 9 is electrically connected with the processing circuit 5. Capacitive sensor 1 and biological sign sensor 9 all set up in the fuselage 4 near one side of skin, and all capacitive sensor 1 evenly distributed are on the circumference that uses biological sign sensor 9 as the centre of a circle, and the interval between two arbitrary adjacent capacitive sensor 1 is the same. The number of the capacitive sensors 1 can be set according to actual precision requirements, for example, 4 capacitive sensors can be set, and the capacitive sensors are respectively arranged in 3-point, 6-point, 9-point and 12-point directions.

Based on the structural characteristics, the processing circuit 5 is configured to determine the target capacitive sensor 1 whose capacitance value is not within the preset value range, determine that the position corresponding to the target capacitive sensor 1 is a position where the terminal device is not worn correctly, and send out a prompt message that the terminal device is not worn correctly at the position.

A technician may first determine the position of the capacitive sensor 1 on the back of the smart watch, then determine the distance range between the capacitive sensor 1 and the skin when each position is correctly worn, for example, 0-0.5mm, then determine a preset value range of the capacitance value based on the distance range, and store the preset value range in the smart watch, where the preset value range represents the capacitance value when the smart watch is correctly worn. When a user wears the intelligent watch and needs to monitor biological signs, if heart rate detection is carried out, the intelligent watch can acquire the capacitance value of each capacitive sensor 1, whether the capacitance value of each capacitive sensor 1 is within a preset numerical range is determined, and if the capacitance value of the target capacitive sensor 1 is not within the preset numerical range, the situation that the position corresponding to the target capacitive sensor 1 is worn loosely can be determined. Corresponding prompt information can be sent out at this time, for example, the prompt information is that the position of the 3 point is not tight, the heart rate cannot be accurately detected, and you ask for adjustment. The prompt message can be displayed through a screen, and can also be broadcasted through voice.

The manner of triggering the motion detection or the correct wearing detection is described below.

Detecting an open trigger

And a processor 8 for enabling capacitance value detection when an enabling trigger event is detected. When no start triggering event is detected, the processor 8 may control not to supply power to the capacitive sensor 1, so that the detection of the capacitance value is not performed, and the detection of the capacitance value is started after the start triggering event is detected. In this way, power can be saved to some extent. The starting trigger event can be triggered by user operation, or can be automatically triggered by an application program or a system program under a certain service scene. The start trigger event can be set arbitrarily based on actual requirements, and several possible start trigger events are described below.

(1) The attitude information of the terminal device satisfies a first attitude condition.

The first posture condition is a condition which needs the posture information of the smart watch to meet.

For example, the first posture condition is that the posture information of the smart watch is changed from first posture information to second posture information, the first posture information is the posture information with the dial facing upwards, the second posture information is the posture information with the dial facing downwards, and the corresponding action is that the hand wearing the smart watch of the user turns down the wrist and turns from the dial facing upwards to the dial facing downwards. For another example, the first posture condition is that the smart watch keeps the third posture information for a preset time period, the third posture information is the posture information with the dial facing upward, and the corresponding action is that the user keeps the dial facing upward for a certain time period.

(2) The motion information of the terminal device satisfies a first motion condition.

The first motion condition is a condition which needs the motion parameters such as speed, acceleration or displacement of the smart watch to meet.

For example, within a preset duration, the speed is increased to a preset speed value, the displacement direction is upward, and the corresponding action is that the user quickly raises his hand.

(3) And receiving a starting instruction.

The starting instruction can be an instruction triggered by a user operating an entity key or a virtual control.

For example, an upper floating control is arranged in an interface of the smart watch, and when capacitance detection is in a closed state, a start instruction can be issued by clicking the control.

(4) The target function is turned on.

For example, the heart rate detection function is turned on, and the heart rate detection function may be periodically turned on automatically or turned on by a user operation.

Detecting an end trigger

And the processor 8 is further used for stopping the capacitance value detection when the closing trigger event is detected. The shutdown trigger may be set arbitrarily based on actual requirements, and may be set in coordination with the startup trigger time, and several possible startup triggers are described below.

(1) The attitude information of the terminal device satisfies the second attitude condition.

Wherein the second posture condition is a condition that requires the posture information of the smart watch to be satisfied.

For example, the second posture condition is that the posture information of the smart watch is changed from the second posture information to the first posture information, the first posture information is the posture information with the dial facing upwards, the second posture information is the posture information with the dial facing downwards, and the corresponding action is that the hand wearing the smart watch of the user turns down the wrist and turns from the dial facing downwards to the dial facing upwards. For another example, the second posture condition is that the smart watch keeps the fourth posture information for a preset time, the fourth posture information is the posture information that the dial faces downwards, and the corresponding action is that the user keeps the dial faces downwards for a certain time.

(2) The motion information of the terminal device satisfies the second motion condition.

The second motion condition is a condition which needs the motion parameters such as speed, acceleration or displacement of the smart watch to meet.

For example, within a preset duration, the speed is increased to a preset speed value, the displacement direction is downward, and the corresponding action is that the user quickly flicks his hand downward.

(3) And receiving a closing instruction.

The closing instruction can be an instruction triggered by a user operating an entity key or a virtual control.

For example, an upper floating control is arranged in an interface of the smart watch, and when capacitance value detection is in a starting state, a closing instruction can be sent out by clicking the control.

(4) The target function is turned off.

For example, the heart rate detection function is turned off, and the heart rate detection function may be turned off automatically or by user operation when a preset time period is reached after the heart rate detection is completed.

In the embodiment of the application, the terminal device can sense the change of the distance of the skin of the human body by using the capacitive sensor 1, and cannot be interfered by other conductive objects which are slightly far away. Therefore, the action detection or the correct wearing detection can be accurately carried out.

The embodiment of the present application further provides a sensor assembly of a terminal device, as shown in fig. 18, the sensor assembly includes a base 10 and a capacitive sensor 1, and the capacitive sensor 1 is disposed on the base 10.

The sensor assembly is a matching component of the terminal equipment, can be installed on the terminal equipment, can also be detached from the terminal equipment, and can be used on different terminal equipment. For example, the user has an intelligent watch and an intelligent bracelet, and still has a sensor assembly, and this user can install sensor assembly on the intelligent watch when using the intelligent watch, can dismantle sensor assembly from the intelligent watch when using the intelligent bracelet, installs it on the intelligent bracelet. The sensor assembly may be mounted on a surface of the terminal device that contacts the skin. The function of the sensor assembly is to perform capacitive sensing.

Terminal equipment can be when dressing with there being the wearing equipment of contact of human skin, like intelligent wrist-watch, intelligent bracelet, intelligent neck ring, intelligent foot ring etc.. In this embodiment, the scheme is described by taking the smart watch as an example, and other situations are similar to the above and are not described again.

The shape of the base 10 is determined by the distribution requirement of the capacitive sensor 1, and may be a strip, a ring, etc. The base 10 is made of a flexible material such as rubber, plastic, etc. One surface of the base 10 is a surface on which the capacitive sensor 1 is disposed. After sensor unit installs on the smart watch, another surface and the terminal equipment laminating of base. When the user wears the smart watch, the surface of the base 10 on which the capacitive sensor 1 is disposed is in contact with the skin, that is, the surface is close to the skin side of the user on the base 10 when the sensor assembly is mounted on the terminal device and the terminal device is worn.

The surface of the base 10 can be provided with a groove 11, the capacitive sensor 1 is arranged in the groove 11, the detection surface of the capacitive sensor 1 is lower than the notch of the groove 11, and the distance between the detection surface and the notch of the groove 11 is within a preset distance range. The predetermined distance may range from 0.5 to 1mm. This surface is on the side of the base 10 that is adjacent to the skin of the user when the sensor assembly is mounted on the terminal device and the terminal device is worn. The number and the position of the grooves 6 can be set arbitrarily according to requirements, the number of the grooves 6 can be the same as or different from the number of the capacitive sensors 1, that is, only one capacitive sensor 1 can be arranged in one groove 6, or one groove 6 can also be provided with a plurality of capacitive sensors 1. For example, one elongated groove 11 is provided to dispose all the capacitive sensors 1 in the groove 11, or a plurality of square grooves 11 are provided, one capacitive sensor 1 being disposed in each square groove 11.

The capacitive sensor can be printed in the groove 6 in a 3D printing mode, the material can be conductive materials such as gold, silver and copper, and the metal material is printed at the bottom of the groove 6 through 3D printing to form a metal film with a preset pattern, and the pattern can be seen in fig. 1 and fig. 2.

Or alternatively, the capacitive sensor 1 is embedded under the surface of the base 10, and the distance between the detection surface of the capacitive sensor 1 and the surface is within a preset distance range. The predetermined distance may range from 0.5 to 1mm. This surface is on the side of the base 10 that is adjacent to the skin of the user when the sensor assembly is mounted on the terminal device and the terminal device is worn.

When processing, can set up the recess on base 10 earlier, process capacitive sensor 1 to the recess through 3D printing, then use corresponding material to seal the recess in order to cover capacitive sensor 1. Therefore, the capacitive sensor 1 is not exposed to the air, so that the capacitive sensor has better durability, and the capacitive sensor 1 cannot be seen, namely, the appearance of a product is not influenced, so that the industrial design of the product is more convenient.

A terminal device is described below, which includes a body, a processing circuit, and the above-described sensor assembly, and a base 10 is fixed to the body. Still taking the example of a smart watch, the smart watch may include a body and a processing circuit.

A mounting structure may be provided between the body and the base 10 for securing therebetween. For example, a mounting groove may be provided on the body, the mounting groove matching the shape of the base 10, and the base 10 may be mounted in the mounting groove. For another example, a plurality of mounting holes may be provided on the body, mounting posts are respectively provided on the base 10 at positions corresponding to each mounting hole, and the mounting posts are in interference fit with the mounting holes, so that the base 10 may be fixed on the body through the mounting posts and the mounting holes. Fig. 19 is a schematic view of the terminal device and sensor assembly mounted together.

A first connection port may be provided on the body of the smart watch, and a second connection port may be correspondingly provided at a corresponding position on the base 10. The first connection port is electrically connected with the processing circuit, the second connection port is electrically connected with the capacitive sensor 1, and when the base 10 and the smart watch are fixed, the first connection port is electrically connected with the second connection port. Two specific cases are described below.

In the first case, a first connection port is provided on the body, a second connection port is provided on the base 10, and the number of pins of the first connection port and the number of pins of the second connection port are the same as the number of the capacitive sensors 1 in the sensor assembly. Each pin of the second connection port is electrically connected with one capacitive sensor 1.

In the second case, the body is provided with a plurality of first connection ports, the base 10 is provided with a plurality of second connection ports, and the number of the first connection ports is the same as that of the capacitive sensors 1 in the sensor assembly. Each second connection port is electrically connected with one capacitive sensor 1.

The specific structure and function of the processing circuit have been described in the foregoing embodiments, and are not described in detail herein.

In the embodiment of the application, the sensor assembly adopts the capacitive sensor 1 to sense the change of the distance of the skin of the human body, and cannot be interfered by other conductive objects which are slightly far away. Therefore, the action detection or the correct wearing detection can be accurately carried out. Moreover, the sensor assembly is detachably connected with the terminal device, so that the flexibility of the terminal device for motion detection, correct wearing detection and the like can be improved.

An embodiment of the present application further provides a detection method, where the detection method may be applied to the terminal device, as shown in fig. 20, and the method includes the following steps:

2001, the capacitance value of the capacitance sensor 1 is detected.

2002, corresponding processing is performed based on the indication information, which is determined according to the capacitance value.

In a possible implementation manner, when the terminal device is worn on the target portion of the user, the capacitance value of the capacitive sensor 1 changes according to the action of the target portion. The terminal device specifies a target motion command corresponding to the motion of the target portion based on the instruction information, and executes processing corresponding to the target motion command.

In one possible implementation, the capacitive sensor 1 is multiple, the terminal device is a device worn around, and the multiple capacitive sensors 1 are distributed on the terminal device, so that when the terminal device is worn, the multiple capacitive sensors are distributed around the target area. The capacitance condition is determined according to a first average value of the capacitance values of the capacitive sensors 1 in the first capacitive sensor set and a second average value of the capacitance values of the capacitive sensors 1 in the second capacitive sensor set.

For a detailed description of the processing procedure of the detection method, reference may be made to the above description of the embodiments.

Terminal equipment uses above-mentioned capacitive sensor in this application embodiment, and the characteristics that change along with the change of distance between capacitive sensor and the conductor with the capacitance value that can be fine through foretell parameter setting for the distance change to the skin that is close to mutually that capacitive sensor can be better carries out the perception, detects skin and terminal equipment's distance condition through detecting the capacitance value. When a user wears the terminal equipment to perform some actions, the distance between the capacitance sensor and the skin slightly changes along with the actions of the user, so that the capacitance value changes, and the terminal equipment can perform some specified processing at the moment. Therefore, when a user wants to trigger a certain treatment, the user only needs to wear the organ of the terminal equipment to act, if the user wears the terminal equipment by one hand, the other hand is not needed to participate at all at the moment and is in a completely liberated state, and therefore the operation convenience can be improved by adopting the scheme of the application.

In the above embodiments, all or part of the implementation may be realized by software, hardware, firmware or any combination thereof, and when the implementation is realized by software, all or part of the implementation may be realized in the form of a computer program product. The computer program product comprises one or more computer program instructions which, when loaded and executed on a device, cause a process or function according to an embodiment of the application to be performed, in whole or in part. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optics, digital subscriber line) or wirelessly (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by the device or a data storage device, such as a server, a data center, etc., that is integrated into one or more available media. The usable medium may be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape, etc.), an optical medium (such as a Digital Video Disk (DVD), etc.), or a semiconductor medium (such as a solid state disk, etc.).

It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the storage medium may be a read-only memory, a magnetic disk or an optical disk.

The above description is only one embodiment of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

A capacitive sensor (1), characterized in that the capacitive sensor (1) comprises a plurality of first plates (2) and a plurality of second plates (3), the plurality of first plates (2) and the plurality of second plates (3) being for connecting different electrodes, the plurality of first plates (2) and the plurality of second plates (3) constituting a plurality of plate pairs, each plate pair of the plurality of plate pairs consisting of adjacent first plates (2) and second plates (3), wherein:

the number of the plurality of polar plate pairs is greater than or equal to 5, the ratio of the effective polar plate length of each polar plate pair to the polar plate distance is greater than 10, and the ratio of the polar plate width of each polar plate pair to the polar plate distance is greater than 2.
The capacitive sensor (1) according to claim 1, characterized in that the plurality of first plates (2) are in a star-shaped configuration connected to each other.
Capacitive sensor (1) according to claim 1, characterized in that the first plates (2) and the second plates (3) are arranged in parallel interspersed with each other, so that at least one first plate (2) and at least one second plate (3) can be multiplexed in two plate pairs.
The capacitive sensor (1) of claim 1, wherein the plurality of first plates (2) and the plurality of second plates (3) form a plurality of plate pairs comprising:

at least one first polar plate (2) of the plurality of first polar plates (2) is arranged between two second polar plates (3) of the plurality of second polar plates (3) to form two polar plate pairs.
The capacitive sensor (1) according to claim 1, characterized in that the plurality of first plates (2) and the plurality of second plates (3) are made of a flexible conductive material.
The capacitive sensor (1) according to claim 1, characterized in that the plurality of first plates (2) and the plurality of second plates (3) are both wave-shaped.
A terminal device, characterized in that it comprises a capacitance value detection circuit (7), a processor (8) and a capacitive sensor (1) according to any one of claims 1-6, wherein:

the capacitance value detection circuit (7) is used for detecting the capacitance value of the capacitance sensor (1) and sending indication information to the processor (8), wherein the indication information is determined according to the capacitance value;

the processor (8) is used for executing corresponding processing based on the indication information.
The terminal device of claim 7, wherein the terminal device is a wearable device;

the terminal equipment further comprises a body (4);

a groove (6) is formed in the first surface of the machine body (4), and the capacitive sensor (1) is arranged in the groove (6); or the capacitance sensor (1) is buried under the first surface of the machine body (4);

the first surface is a surface which is close to one side of the skin of a user when the terminal equipment is worn.
The terminal device according to claim 7 or 8,

the capacitance sensor (1) is used for changing capacitance value when a user wears the terminal equipment on a target part of the user and the target part is moved;

the processor (8) is configured to execute corresponding processing based on the indication information, specifically:

the processor (8) is used for determining a target action instruction corresponding to the action based on the indication information and executing processing corresponding to the target action instruction.
The terminal device according to claim 9, wherein the indication information is the capacitance value, and the processor (8) is configured to determine a target action command corresponding to the action based on the indication information, and perform a process corresponding to the target action command, specifically:

and the processor (8) is used for determining a target action command according to a pre-stored capacitance value condition and the capacitance value and executing processing corresponding to the target action command.
A terminal device according to claim 10, characterized in that the capacitive sensor (1) is plural, the terminal device is a wearable device, and the plural capacitive sensors (1) are distributed on the terminal device such that when the terminal device is worn, the plural capacitive sensors are distributed around the target site.
A terminal device according to claim 11, wherein the capacitance condition is determined from a first average of the capacitance values of the capacitive sensors (1) of the first set of capacitive sensors and a second average of the capacitance values of the capacitive sensors (1) of the second set of capacitive sensors;

the first capacitance sensor set consists of capacitance sensors (1) which are positioned in a first area of the target part when being worn;

the second capacitance sensor set is composed of capacitance sensors (1) which are positioned in a second area of the target part when being worn;

the first region is different from the second region.
The terminal device according to claim 9, wherein the processor (8) is configured to determine, based on the indication information, a target action instruction corresponding to the action, and execute a process corresponding to the target action instruction, specifically:

and the processor (8) is used for inputting the indication information into a pre-trained recognition model, and executing processing corresponding to the target action command when the output of the recognition model is the target action command.
Terminal device according to claim 7 or 8, characterized in that said capacitive sensor (1) is a plurality, said terminal device further comprising a biological signs sensor (9), said plurality of capacitive sensors (1) being evenly distributed around said biological signs sensor (9).
The terminal device according to claim 7 or 8, wherein the processor (8) is configured to determine that the terminal device is not worn correctly according to the capacitance value and a pre-stored capacitance value condition, and issue a prompt message of not being worn correctly.
A terminal device according to claims 1-15, characterized in that the terminal device further comprises a base, which is arranged on the terminal device surface, the capacitive sensor (1) being arranged on the base.
A sensor assembly of a terminal device, characterized in that the sensor assembly comprises a base (10) and a capacitive sensor (1) according to any one of claims 1-6, wherein:

the capacitive sensor (1) is arranged on the base (10).
The sensor assembly according to claim 17, characterized in that a recess (11) is provided on the surface of the base (10), the capacitive sensor (1) being arranged in the recess (11); or,

the capacitive sensor (1) is embedded below the surface of the base (10).
A detection method applied to a terminal device, characterized in that it comprises a capacitive sensor (1) according to any one of claims 1 to 6, the method comprising:

detecting a capacitance value of the capacitive sensor (1);

and executing corresponding processing based on indication information, wherein the indication information is determined according to the capacitance value.
The method according to claim 19, characterized in that, when the terminal device is worn on a target part of a user, the capacitance value of the capacitive sensor (1) is changed according to the action of the target part;

based on the indication information, executing corresponding processing, specifically:

and determining a target action command corresponding to the action of the target part based on the indication information, and executing processing corresponding to the target action command.
The method according to claim 20, wherein the indication information is the capacitance value, and the determining a target motion command corresponding to the motion of the target portion based on the indication information performs a process corresponding to the target motion command, specifically:

determining a target action instruction according to a pre-stored capacitance value condition and the capacitance value, and executing processing corresponding to the target action instruction, wherein the target action instruction corresponds to the capacitance value condition.
The method according to claim 21, wherein the capacitive sensor (1) is plural, the terminal device is a wearable device, and the plural capacitive sensors (1) are distributed on the terminal device such that the plural capacitive sensors are distributed around the target site when the terminal device is worn;

the capacitance value condition is determined according to a first average value of capacitance values of the capacitance sensors (1) in the first capacitance sensor set and a second average value of capacitance values of the capacitance sensors (1) in the second capacitance sensor set;

the first capacitance sensor set is composed of capacitance sensors (1) which are positioned in a first area of the target part when being worn;

the second capacitance sensor set is composed of capacitance sensors (1) which are positioned in a second area of the target part when being worn;

the first region is different from the second region.
The method according to claim 20, wherein the determining, based on the indication information, a target motion command corresponding to the motion of the target portion, and executing a process corresponding to the target motion command, specifically:

and inputting the indication information into a pre-trained recognition model, and executing processing corresponding to the target action command when the output of the recognition model is the target action command.
The method according to claim 19, characterized in that the capacitive sensor (1) is a plurality, the terminal device further comprising a biological sign sensor (9), the plurality of capacitive sensors (1) being evenly distributed around the biological sign sensor (9);

and determining that the terminal equipment is not worn correctly according to the capacitance value and the prestored capacitance value condition, and sending out prompt information of incorrect wearing.