CN112674461A - Method and device for detecting abnormal state of tooth and micro-processing chip - Google Patents
Method and device for detecting abnormal state of tooth and micro-processing chip Download PDFInfo
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Abstract
The application provides a method and a device for detecting abnormal states of teeth and a micro-processing chip. The detection method is applied to the intelligent toothbrush, a pressure sensor is arranged in a brush head of the intelligent toothbrush, and the detection method comprises the following steps: when a brush head of the intelligent toothbrush moves on a first tooth surface, pressure data are collected through a pressure sensor, and a pressure data set is constructed; determining a representative value for the first tooth position from a first time period subset of the first pressure data set; acquiring an abnormal measurement interval of the first tooth surface, and determining the tooth abnormal state of the first tooth position according to the position relation between the representative value and the abnormal measurement interval; and if the representative value is not in the abnormal measurement interval, determining that the first determined first tooth position is in a first abnormal state. The signal value that this application utilized direct mount sensor to obtain on intelligent toothbrush makes the user in time know whether the tooth is healthy.
Description
Technical Field
The invention belongs to the field of smart home, and particularly relates to a method and a device for detecting abnormal states of teeth and a microprocessor chip.
Background
In modern people entering a fast-paced life style, tooth brushing is an important means for keeping teeth clean and oral health, but most people usually do not pay attention to tooth brushing time and tooth brushing methods, so that the teeth are not brushed cleanly and the tooth health is influenced. Therefore, in order to help people to obtain a good tooth brushing habit, people combine the mobile internet of things and an intelligent data acquisition and analysis technology to develop an intelligent toothbrush.
Along with the progress of society, the health is more and more emphasized by people, and the intelligent toothbrush with stronger cleaning effect is developed rapidly, but the existing intelligent toothbrush often sets a certain brushing time in the program, but if the oral cavity is lack of teeth or the teeth are not flat, the preset brushing time is still adopted, so that the tooth brushing time under the tooth lack condition is too long, and if the tooth is brushed for a long time, the bristles excessively rub the surface of the teeth, the enamel of the teeth is easily abraded after the tooth is brushed for a long time, and the teeth become sensitive. The gum atrophy is caused, the tooth brushing hairs can cause certain stimulation to the gum in the tooth brushing process, and the gum atrophy can be caused when the gum is damaged by brushing the toothbrush after the tooth brushing time is long. For a tooth surface with irregular teeth, the desired cleaning effect may not be achieved within a predetermined brushing time. Therefore, the actual brushing time needs to be judged according to the specific situation of the teeth, so that how to conveniently, quickly and timely know the oral health problem of the user is solved, and the specific tooth position of the problem part in the oral cavity can be determined.
Disclosure of Invention
In view of this, the invention provides a method for detecting abnormal state of teeth and an intelligent toothbrush, which solves the problem that a user cannot know the oral health of the user in time.
The detection method of the abnormal tooth condition provided by the first aspect is applied to an intelligent toothbrush, a pressure sensor is arranged in a toothbrush head of the intelligent toothbrush, and the detection method comprises the following steps: s101: when a brush head of the intelligent toothbrush moves on a first tooth surface, pressure data are collected through a pressure sensor, and a pressure data set is constructed; the pressure data set comprises a first pressure data set consisting of pressure data acquired by the first pressure sensor as the first tooth position of the first tooth surface moves; the first pressure data set comprises a first time period subset; s102: determining a representative value for the first tooth position from a first time period subset of the first pressure data set; s103: acquiring an abnormal measurement interval of the first tooth surface, and determining the tooth abnormal state of the first tooth position according to the position relation between the representative value and the abnormal measurement interval; s104: and if the representative value is not in the abnormal measurement interval, determining that the first tooth position is in a first abnormal state.
According to the method for detecting the abnormal state of the tooth, the intelligent toothbrush is provided with the pressure sensor capable of detecting the abnormal state of the tooth, the pressure sensor is used for acquiring the first pressure data set when the first tooth position of the first tooth surface moves, the first time period subset in the first pressure data set is used for determining the representative value of the first tooth position, and whether the first tooth is in the first abnormal state or not can be judged according to the representative value and the abnormal measurement interval of the first tooth surface. The signal value that the utilization direct mount sensor obtained on intelligent toothbrush handles and makes the user in time know the oral health problem of self to can confirm the oral cavity and go out the specific position of problem position, and the severity of going out the problem.
In a possible implementation of the first aspect, the number of pressure sensors is at least 2, the pressure data set further comprises a second pressure data set, the second pressure data set consisting of pressure data acquired by the second pressure sensor during movement of the first tooth position on the first tooth surface; the second pressure data set comprises a first period subset; the detection method further comprises the following steps: s201: obtaining a first time period subset of the second pressure data set, determining a second representative value of the first tooth position from the first time period subset of the second pressure data set; s202: determining the tooth state of the first tooth position according to the position relation between the second representative value and the abnormal measurement interval; s203: if the second representative value is not in the abnormal measurement interval, determining that the first tooth position is in a second abnormal state; s203: and comparing the first abnormal state with the second abnormal state, and if the first abnormal state and the second abnormal state are the same abnormal tooth state, adjusting the tooth evaluation parameters of the first tooth surface according to the abnormal tooth state. In this implementation, a plurality of pressure data sets are acquired by using a plurality of pressure sensors, corresponding representative values of the first pressure data sets when the plurality of data sets move at the first tooth position of the first tooth surface are all in respectively corresponding abnormal measurement intervals, and when abnormal states are the same, the tooth surface is determined to be in an abnormal state.
In a possible implementation of the first aspect, the abnormal tooth state includes a missing tooth state; the anomaly metric intervals comprise a first anomaly metric interval; and if the representative value is not in the first abnormal measurement interval, determining that the tooth abnormal state is a tooth missing state. In this implementation, whether or not the tooth is in the missing state is determined by comparing the representative value with the first abnormal measurement section.
In a possible implementation of the first aspect, the tooth evaluation parameter comprises a tooth zone integrity factor; adjusting brushing parameters of the intelligent toothbrush according to the abnormal state of the teeth comprises: the tooth zone integrity factor of the first proportion is reduced. In this implementation, the first ratio of the tooth zone integrity factor is reduced when the abnormal tooth condition is detected as missing teeth, thereby adjusting better parameters for brushing.
In a possible implementation of the first aspect, the abnormal tooth state includes a tooth convex state; the anomaly metric intervals comprise a second anomaly metric interval; and if the representative value is larger than the maximum dispersion magnitude value, determining that the tooth abnormal state is the tooth convex state. In this implementation, it is determined whether the tooth is in the convex state by comparing the representative value with the second abnormal measurement section.
In a possible implementation of the first aspect, the tooth evaluation parameter includes a tooth surface flatness factor; adjusting the first dental parameter based on the abnormal state of the tooth comprises: reducing the first rate of tooth surface integrity. In this implementation, the first ratio of the tooth zone integrity factor is reduced when the abnormal tooth condition is detected as an outward protrusion of the teeth, thereby adjusting better parameters for brushing.
In a possible implementation method of the first aspect, step S101 further includes: the brush hair of control intelligent toothbrush is contradicted in first tooth face with certain dynamics, and the first even speed of brush head of control intelligent toothbrush passes through first tooth face.
In a possible implementation method of the first aspect, the pressure sensor includes: piezoresistive pressure sensors and piezoelectric pressure sensors.
In a second aspect, there is provided an apparatus for detecting an abnormal state of a tooth, the apparatus comprising means for performing the steps of the first aspect above or any possible implementation manner of the first aspect.
In a third aspect, there is provided an apparatus for detecting abnormal states of teeth, the apparatus comprising at least one processor and a memory, the at least one processor being configured to perform the method of the first aspect above or any possible implementation manner of the first aspect.
In a fourth aspect, there is provided an apparatus for detecting an abnormal state of a tooth, the apparatus comprising at least one processor and an interface circuit, the at least one processor being configured to perform the method of the first aspect above or any possible implementation manner of the first aspect.
In a fifth aspect, an intelligent toothbrush is provided, the intelligent toothbrush comprises a toothbrush head, a toothbrush handle, and a connecting device for connecting the toothbrush head and the toothbrush handle, a sensor is arranged on the intelligent toothbrush, and the intelligent toothbrush further comprises any one of the tooth abnormal state detection devices provided in the second aspect, the third aspect, or the fourth aspect.
A sixth aspect provides a computer program product comprising a computer program for performing the method of the first aspect or any possible implementation form of the first aspect when executed by a processor.
In a seventh aspect, a computer-readable storage medium is provided, in which a computer program is stored, which, when executed, is adapted to perform the method of the first aspect or any possible implementation manner of the first aspect.
In an eighth aspect, there is provided a chip or an integrated circuit, comprising: a processor configured to invoke and run the computer program from the memory, so that the device on which the chip or the integrated circuit is installed performs the method of the first aspect or any possible implementation manner of the first aspect.
For technical effects of the apparatus provided by the present application, reference may be made to the technical effects of the first aspect or each implementation manner of the first aspect, and details are not described here.
Compared with the prior art, the invention has the beneficial effects that:
according to the method for detecting the abnormal state of the tooth, the intelligent toothbrush is provided with the pressure sensor capable of detecting the abnormal state of the tooth, the pressure sensor is used for acquiring the first pressure data set when the first tooth position of the first tooth surface moves, the first time period subset in the first pressure data set is used for determining the representative value of the first tooth position, and whether the first tooth is in the first abnormal state or not can be judged according to the representative value and the abnormal measurement interval of the first tooth surface. The signal value obtained by the sensor directly arranged on the intelligent toothbrush is utilized to process, so that the user can know the oral health problem in time, and the specific position of the part with the problem in the oral cavity can be determined. Meanwhile, through setting dual measurement result comparison, the correctness of the measurement result is ensured, the tooth evaluation parameters are adjusted on the premise of ensuring the correctness of the measurement result, and the problem that the intelligent toothbrush sends wrong control instructions due to the fact that the intelligent teeth adjust the tooth evaluation parameters by mistake due to wrong measurement is solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 shows a schematic implementation flow diagram of a detection method 100 provided in an embodiment of the present application;
fig. 2 is a schematic diagram illustrating an implementation flow of a detection method 200 provided in an embodiment of the present application;
fig. 3 is a schematic flow chart illustrating an implementation of a detection method 300 provided by an embodiment of the present application;
FIG. 4 is a schematic diagram illustrating detection of a single pressure sensor edentulous signal provided by an embodiment of the present application;
FIG. 5 is a schematic diagram illustrating detection of a tooth out-of-center signal by a single pressure sensor provided by an embodiment of the present application;
FIG. 6 is a schematic diagram illustrating detection of a missing tooth signal by two pressure sensors provided by an embodiment of the present application;
FIG. 7 is a diagram illustrating detection of a tooth out-of-center signal by two pressure sensors according to an embodiment of the present application;
FIG. 8 illustrates a schematic diagram of detection of multiple pressure sensor signals provided by an embodiment of the present application;
FIG. 9 illustrates a schematic diagram of an intelligent toothbrush with a pressure sensor provided by an embodiment of the present application;
FIG. 10 is a schematic diagram illustrating detection of three pressure sensor signals provided by an embodiment of the present application;
fig. 11 is a schematic structural diagram of a detection apparatus 1100 provided in an embodiment of the present application;
fig. 12 shows a schematic structural diagram of an intelligent toothbrush 1200 provided by an embodiment of the present application.
Detailed Description
In order to solve the above problems, the present application provides N pressure sensors capable of detecting abnormal tooth states on an intelligent toothbrush, provides a pressure sensor capable of detecting abnormal tooth states on an intelligent toothbrush, collects a first pressure data set during movement of a first tooth position on a first tooth surface through the pressure sensor, determines a representative value of the first tooth position through a first time period subset in the first pressure data set, and determines whether the first tooth is in the first abnormal state according to the representative value and an abnormal measurement interval of the first tooth surface. The signal value obtained by the sensor directly mounted on the intelligent toothbrush is utilized to process and determine whether the teeth of the oral cavity of the user are healthy or not, and the method is simple, convenient and easy to implement.
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
First, before describing embodiments of the methods and apparatus provided herein, some of the terms that will be referred to immediately below will be described. The use of the ordinal terms "first", "second", etc., in the present application is for descriptive purposes only and is not to be construed as indicating or implying relative importance or an implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present application, "a plurality" means two or more unless otherwise specified.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
These and other aspects of embodiments of the invention will be apparent with reference to the following description and attached drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the ways in which the principles of the embodiments of the invention may be practiced, but it is understood that the scope of the embodiments of the invention is not limited correspondingly. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
The method for detecting abnormal tooth conditions provided in the present application will be described below with reference to the illustrated examples.
Referring to fig. 1, a flowchart of an embodiment of a method for detecting abnormal tooth condition is provided. As shown in fig. 1, the method 100 includes S101 to S103.
S101, when a brush head of the intelligent toothbrush moves on a first tooth surface, pressure data are collected through a pressure sensor, and a pressure data set is constructed; the pressure data set comprises a first pressure data set consisting of pressure data acquired by the first pressure sensor as the first tooth position of the first tooth surface moves; the first pressure data set comprises a first time period subset; the first subset of time periods is a set of pressure data acquired by the pressure sensor at a first tooth position on the first tooth surface.
The pressure signal of the pressure sensor may be a pressure value signal. For example, be provided with pressure sensor in the brush head of intelligent toothbrush, the brush hair of control intelligent toothbrush contacts with the tooth surface with certain dynamics to control brush head at the uniform velocity through this tooth surface, when the abnormal conditions appeared in the tooth, pressure sensor's pressure value can change, thereby obtains the pressure value signal, constructs the pressure data set according to the pressure value signal that obtains. Specifically, since the brush head of the intelligent toothbrush passes through the tooth surface at a constant speed, the pressure data set collected by the pressure sensor in the brush head can be divided into a plurality of time-interval data subsets, and each time-interval data subset respectively corresponds to the pressure data of one tooth surface of the tooth surface.
Optionally, as a possible implementation, when setting up 1 pressure sensor on the intelligence toothbrush, move the toothbrush head to the other end at the uniform velocity with certain dynamics from the one end of tooth face in measurement process, the pressure that this tooth face received passes through the pressure sensor that the brush hair transmitted to the toothbrush head, and pressure sensor gathers pressure signal this moment. A pressure data set is constructed from pressure data for a tooth surface corresponding to the first tooth surface for each time period data subset.
S102: a first time period subset of the first pressure data set is acquired and a representative value for the first time period subset is determined.
Specifically, the variance may be calculated from a first time period subset of the first pressure data set by a variance formula with the variance result as a representative value; other metric parameters such as median, mode, etc. are also possible.
S103: and acquiring an abnormal measurement interval of the first tooth surface, and determining the tooth abnormal state of the first tooth position according to the position relation between the representative value of the first time interval subset and the abnormal measurement interval.
The abnormal measurement interval is opposite to the standard measurement interval, and the tooth state can be determined by determining the position relationship between the representative value and the two intervals. The standard measurement interval of the first tooth surface is an interval where a representative value of a pressure data set acquired by a pressure sensor passes through the complete tooth surface at a constant speed; and if the representative value of a certain tooth position is located in the abnormal measurement interval, determining that the position is in a normal tooth state.
S104: and if the representative value is within the abnormal measurement interval, determining that the first tooth position is in a first abnormal state.
The abnormal measurement interval comprises a plurality of sub abnormal measurement intervals, and if the representative value is positioned in different sub abnormal measurement intervals, the tooth position is in different abnormal tooth states.
When the representative value is within the abnormal measurement interval, it indicates that the first tooth position is in the first abnormal state.
In the embodiment of the application, the pressure sensor capable of detecting the abnormal state of the tooth is arranged on the intelligent toothbrush, the pressure sensor is used for acquiring the first pressure data set when the first tooth position of the first tooth surface moves, the representative value of the first tooth position is determined through the first time period subset in the first pressure data set, and whether the first tooth is in the first abnormal state or not can be judged according to the representative value and the abnormal measurement interval of the first tooth surface. The signal value obtained by the sensor directly mounted on the intelligent toothbrush is utilized to process, so that the user can timely know the oral health problem of the user, and the specific position of the problem-producing part in the oral cavity and the abnormal degree of the problem can be determined.
The single pressure sensor detects and can have the error unavoidably, therefore, can set up a plurality of pressure sensors above the brush head, through comparing the data that a plurality of sensors gathered, further improve and detect the accuracy. In another embodiment of the present application, when two pressure sensors are provided, the pressure data set further comprises a second pressure data set consisting of pressure data acquired by the second pressure sensor as it moves over the first tooth position of the first tooth surface; the second pressure data set includes a first time period subset. Fig. 2 is a flowchart of another embodiment of a method for detecting abnormal conditions of teeth. As shown in fig. 2, the method 200 includes S201 to S203.
S201: a first time period subset of the second pressure data set is acquired, and a representative value for the first tooth position is determined from the first time period subset of the second pressure data set.
Optionally, as another possible implementation, when setting up 2 pressure sensor on the intelligent toothbrush, when moving toothbrush head to the other end at a section of tooth face at the uniform velocity in measurement process, the pressure that this tooth face received passes through two pressure sensor that the brush hair was successively transmitted to the toothbrush head, and two pressure sensor all gather pressure signal this moment, establish the pressure data set, and this second pressure data set comprises the pressure data of this sensor when the first tooth position of first tooth face moves, and this second pressure data set includes first period subset.
S202: and determining a second abnormal state of the first tooth position according to the position relation between the representative value and the abnormal measurement interval.
Specifically, the variance may be calculated from a first time period subset of the first pressure data set by a variance formula with the variance result as a representative value; other metric parameters such as median, mode, etc. are also possible. And judging whether the representative value of the first time period subset of the second pressure data set is within the abnormal measurement interval.
S203: and if the representative value is not in the abnormal measurement interval, determining that the first tooth position is in a second abnormal state.
The abnormal state in the embodiment of the present application includes a tooth missing state and a tooth protruding state.
In some embodiments of the present application, the abnormal type of the abnormal state of the tooth position on the first tooth surface corresponding to a time period subset may be determined by the representative value of the time period subset in the pressure data set and the position of the first tooth surface abnormal measurement interval. Specifically, the abnormal measurement interval includes a first abnormal measurement interval, and values within the first abnormal measurement interval are all smaller than values within the standard measurement interval. And judging whether the representative value of the time interval subset is in the first abnormal measurement interval, and if the representative value of the time interval subset is in the first abnormal measurement interval, determining that the tooth position corresponding to the time interval subset is in the tooth missing state. In addition, the abnormal measurement interval also comprises a second abnormal measurement interval, and the values in the second abnormal measurement interval are all larger than the values in the standard measurement interval. If the representative value of the time interval is in the second abnormal measurement interval, the tooth positions corresponding to the time interval subset can be determined to be in the convex state.
S204: and comparing the first abnormal state with the second abnormal state, and if the first abnormal state and the second abnormal state are the same abnormal tooth state, adjusting the tooth evaluation parameters of the first tooth surface according to the abnormal tooth state.
And when the first abnormal state and the second abnormal state are the same, determining that the same abnormal tooth state occurs at the first tooth position, namely, the first tooth position is in an absent state or an outward protruding state, and adjusting the tooth evaluation parameters of the first tooth surface according to the abnormal tooth state. The dental evaluation parameter includes a dental zone integrity factor. The tooth zone integrity factor can be a tooth zone integrity factor, the tooth zone integrity factor of a normal tooth zone is 1, and when the tooth has an abnormal state, the tooth zone integrity factor of the tooth zone is correspondingly reduced by a certain proportion. The ratio can be the ratio of the tooth volume of the tooth position to the total area of the teeth in the tooth area, or the ratio of the surface area of the tooth position to the total area of the tooth surface. Specifically, if the abnormal states of the same tooth position on the same tooth surface detected by the two pressure sensors are both in a tooth missing state, the intelligent toothbrush reduces the tooth area integrity coefficient by a certain proportion; if the abnormal states of the same tooth position of the same tooth surface detected by the two pressure sensors are convex states, the intelligent toothbrush reduces the tooth surface leveling coefficient by a certain proportion.
When two pressure sensors are used for detection, according to the judgment mode for judging the first abnormal state and in combination with the judgment result of the first abnormal state, when the result of the first abnormal state is in the tooth missing state, and the second sensor also judges that the tooth state is in the tooth missing state, the tooth state is in the tooth missing state; similarly, the result of the first abnormal state is the tooth convex state, and the second sensor also judges that the tooth state is the tooth convex state, and then the tooth state is the tooth convex state. Through the comparison of the double measuring results, the correctness of the measuring result is ensured, the tooth evaluation parameters are adjusted on the premise of ensuring the correctness of the measuring result, and the problem that the intelligent toothbrush sends wrong control instructions due to the fact that the intelligent teeth adjust the tooth evaluation parameters by mistake due to wrong measurement is solved.
Optionally, as another possible implementation manner, when there are multiple pressure sensors, and when the results of the abnormal states obtained by the multiple pressure sensors are consistent, it indicates that the tooth is in the abnormal state, and details thereof are not repeated here.
In other embodiments of the present application, pressure data may be acquired directly from the pressure sensor to construct a pressure data set. And judging the abnormal state of the teeth. Fig. 3 is a flowchart illustrating a method for detecting abnormal conditions of teeth according to another embodiment. As shown in fig. 3, the method 300 includes S301 to S303.
S301, determining the measurement values corresponding to the signals respectively generated by the N pressure sensors at the first tooth positions.
The N sensors may include, but are not limited to, one pressure sensor, two pressure sensors, or a plurality of pressure sensors.
Optionally, as a possible implementation manner, when 1 pressure sensor is arranged on the intelligent toothbrush, when the toothbrush head moves to the other end at the uniform speed at one end of the tooth surface in the measurement process, the pressure applied to the tooth surface is transmitted to the pressure sensor in the toothbrush head through the bristles, and at the moment, the pressure sensor collects pressure signals. The processor processes the pressure signal obtained by the pressure sensor to obtain a measured value corresponding to the pressure signal. Specifically, if there is a missing tooth condition on the tooth surface, the pressure variation curve collected by the pressure sensor will have a concave section, as shown in fig. 4; if the tooth surface is convex, the pressure change trend collected by the pressure sensor will be a convex section, as shown in fig. 5.
Optionally, as another possible implementation, when 2 pressure sensors are arranged on the intelligent toothbrush, when the toothbrush head moves to the other end at a constant speed on one section of the tooth surface in the measurement process, the pressure applied to the tooth surface is successively transmitted to the two pressure sensors in the toothbrush head through the bristles, at the moment, the two pressure sensors all acquire pressure signals, and the processor processes the pressure signals of the same tooth position acquired by the two pressure sensors to obtain the measured values corresponding to the two pressure signals respectively. Specifically, if there is a tooth missing condition on the tooth surface, the pressure change curves collected by the two pressure sensors will respectively have a concave section at the same tooth position, as shown in fig. 6; if the tooth surface has the situation that the tooth is convex outwards, the pressure curves acquired by the two pressure sensors are in a convex section at the same position, as shown in fig. 7.
Optionally, as another possible implementation manner, when a certain tooth surface has both a tooth missing and a protruding tooth, a plurality of pressure sensors may be disposed on the intelligent toothbrush, when the brush head of the intelligent toothbrush is placed on the tooth, and when the brush head moves to the other end at a constant speed at one section of the tooth surface in the measurement process, pressure applied to the tooth surface is transmitted to the plurality of pressure sensors in the brush head through the bristles, at this time, the plurality of pressure sensors all collect pressure signals, and the processor processes the pressure signals of the same tooth position obtained according to the plurality of pressure sensors to obtain measurement values corresponding to the plurality of pressure signals respectively. Specifically, as shown in fig. 8, if there is both tooth missing and tooth protruding on the tooth surface, the pressure variation curves collected by the multiple pressure sensors will respectively appear in a concave section at the same tooth position at the tooth missing position, and the pressure variation curves collected by the multiple pressure sensors will respectively appear in a convex section at the same tooth position at the tooth protruding position.
S302, based on the at least one measured value and the first threshold value, a difference value between the at least one measured value and the first threshold value is determined.
First, the first threshold value is a measurement value corresponding to the pressure signal when the intelligent toothbrush brushes across the tooth surface when the tooth is in a healthy state. In the embodiment of the present application, the size of the first threshold is not limited.
In one embodiment of the application, when detecting teeth on the lateral side of the middle upper/lower jaw area, N pressure sensors are arranged on the intelligent toothbrush, and then measured values corresponding to signals of the N pressure sensors at the same tooth position are obtained, and based on the N measured values and a first threshold value, difference values corresponding to the N measured values and the first threshold value respectively are determined. If the difference is greater than the first threshold, it can be determined that a tooth anomaly exists at the first tooth position of the first tooth surface. The abnormal condition of the tooth comprises a tooth missing condition and a tooth protruding condition. The method is used for judging whether the data fluctuation generated in the process of tooth missing is larger than the condition that teeth are protruded outwards, so a second threshold value is set for further judgment, and if the measured value is larger than the second threshold value, the tooth missing condition is represented at the moment; if the measurement is less than the second threshold, the location is indicated as a convex tooth.
Alternatively, as a possible implementation manner, when one pressure sensor is provided on the intelligent toothbrush, the difference between the measured value and the first threshold value is calculated based on the measured value and the first threshold value obtained from the pressure signal of the same tooth position of the one pressure sensor.
Alternatively, as another possible implementation manner, when two sensors are provided on the intelligent toothbrush, the difference between the two measured values and the first threshold value is calculated based on the measured values and the first threshold value obtained from the pressure signals of the same tooth position of the two sensors, respectively.
Alternatively, as another possible implementation manner, when a plurality of sensors are provided on the intelligent toothbrush, the difference between the plurality of measured values and the first threshold value is calculated based on the measured values and the first threshold value obtained from the pressure signals of the same tooth position of the plurality of sensors, respectively.
In another embodiment of the present application, no detection may occur for the third molar, the second molar, when it is desired to measure the lateral facet of the left zone or the right zone. Thus, at this time, it is necessary that at least one of the measured values represents a measured value corresponding to a signal generated by each of the pressure sensors out of the N pressure sensors in contact with the first tooth position. That is, when the second molar or/and the second molar is/are detected, since the oral space is limited, even if the intelligent toothbrush is provided with a plurality of pressure sensors, some of the pressure sensors detect the position of the first tooth which cannot be reached, and therefore, it is only necessary to acquire detection values corresponding to signals of the pressure sensors which are in contact with the position of the first tooth, and calculate the difference value based on the detection values and the first threshold value.
For example, when the third molar and the second molar are missing, 3 pressure sensors are arranged on the intelligent toothbrush as shown in fig. 9, and when the toothbrush head moves from left to right on the tooth surface, the corresponding change trend of the detected pressure is shown in fig. 10. As can be seen in figure 10, the front half of the brushhead passes behind the first three teeth, i.e. sensor 1 at t0-t3Time and sensor 2 over t1-t4After the moment, the pressure of the brush head at the positions of the third molar and the second molar is reduced, and the brush head cannot move continuously subsequently, the pressure values of the sensors 1 and 2 are in a pressure reduction state continuously until the brush head leaves the tooth surface; the rear half of the brush head, i.e. the position of the sensor 3, only passes through the front three teeth due to the limitation of the oral space and the shape of the brush head, and cannot reach the positions of the third molar and the second molar, so the pressure sensor 3 is always in a pressure state in fig. 8.
Alternatively, if only the third molar is missing, then only sensor 1 is at t4The pressure drop occurs at any moment and continues until the brush head leaves the tooth surface; the brush head where the sensor 2 is located cannot pass through the third molar part, so that the pressure of the sensor 2 is not changed until the brush head leaves the tooth surface; the sensor 3 is always kept in a pressurized state. At this time, a measurement value corresponding to the signal of the sensor 3 at the third molar is acquired, and it is determined whether or not the tooth missing state is true based on the measurement value corresponding to the signal of the sensor 3 at the third molar and the first threshold.
Alternatively, if the second molar is missing, sensor 1 is at t3-t4At time, the pressure value is decreased at T4Then the pressure value is recovered to be normal until the pressure sensor leaves the tooth surface; sensor 2 at t4-t5When the pressure value is reduced, the pressure value is not changed until the brush head leaves the tooth surface; the position of the brush head where the sensor 3 is located does not pass through the position of the second molar, so the sensor 3 is always kept in a pressure state. At this time, the measured values corresponding to the signals of the sensor 2 and the sensor 3 at the second molar are obtained, and whether the tooth missing condition is determined according to the measured values corresponding to the signals of the sensor 2 and the sensor 3 at the second molar and the first threshold.
And S303, when the difference value meets a preset first condition, determining that the first tooth position is in an abnormal state.
In the embodiment of the present application, the preset first condition includes two conditions, namely, a first condition that when the difference is a positive number and the difference is greater than or equal to a second threshold, it is determined that the first tooth position has a missing tooth condition, and a second condition that when the difference is a negative number and the difference is greater than or equal to a third threshold, it is determined that the first tooth position has a protruding tooth condition.
It will be appreciated that when in the edentulous state, the corresponding measured value of the signal from the pressure sensor will decrease, i.e. the difference between the measured value of a normal tooth and the measured value in the absence of a tooth will be positive.
Optionally, the pressure value of the pressure sensor may drop to include a normal drop range, and a second threshold is set to determine whether the pressure value of the sensor drops within the normal range, and if the second threshold is exceeded, it indicates that the tooth is missing. The second threshold is not limited in size.
Optionally, when the tooth is in the convex state, the measured value corresponding to the signal of the pressure sensor rises, i.e. the difference between the measured value of the normal tooth and the measured value of the tooth in the convex state is a negative value. The pressure value of the pressure sensor can rise and also comprises a normal rising range, and whether the pressure value of the sensor rises within the normal range or not is determined by comparing with a third threshold value, and if the pressure value of the pressure sensor exceeds the third threshold value, the tooth is indicated to be in a convex state.
And adjusting the complete coefficient of the dental area with the first proportion according to the detection result of the tooth abnormality to obtain the tooth brushing time and the tooth brushing force which are matched under the tooth abnormality state so as to ensure the tooth health.
Optionally, as an embodiment of the present application, the pressure sensor may be at least one of a piezoresistive pressure sensor and a piezoelectric pressure sensor.
The application also provides a tooth abnormal state detection device 1100, which comprises a pressure data acquisition unit 1101, a representative value determination unit 1102 and an abnormal state determination unit 1103.
The pressure data acquisition unit 1101 is used for acquiring pressure data through the pressure sensor and constructing a pressure data set when bristles of the intelligent toothbrush are pressed against a first tooth surface with a certain force to control the brush head of the intelligent toothbrush to uniformly pass through the first tooth surface.
The representative value determining unit 1102 is configured to receive the pressure data set and calculate a representative value for a first tooth position in the first tooth surface based on the pressure data set.
The abnormal state determination unit 1103 is configured to receive the representative value and the abnormal measurement interval of the first tooth surface, and determine a tooth abnormal state of the first tooth position according to a position relationship between the representative value and the abnormal measurement interval.
The application also provides an intelligent toothbrush, and fig. 12 is a schematic structural diagram of the intelligent toothbrush provided by the embodiment of the application. The intelligent toothbrush is provided with N pressure sensors, and N is a positive integer. As shown in fig. 12, the intelligent toothbrush device 1200 includes a processor 1201, a memory 1202, a sensor 1203, a communication interface 1204, and a bus 1205. The processor 1201, the memory 1202, the sensor 1203, the communication interface 1204, and the bus 1205 may communicate with each other, or may communicate with each other by other means such as wireless transmission. The memory 1202 is configured to store instructions and the processor 1201 is configured to execute the instructions stored by the memory 1202. The memory 1202 stores program code 12021, and the processor 1201 may invoke the program code 12021 stored in the memory 1202 to perform the above-described method of tooth anomaly detection.
The N pressure sensors include at least one of piezoresistive pressure sensors and piezoelectric pressure sensors.
The smart toothbrush 1200 may be or include the apparatus 1100 described above.
It should be understood that in the embodiments of the present application, the processor 1201 may be a CPU, and the processor 1201 may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or any conventional processor or the like.
The memory 1202 may include both read-only memory and random access memory, and provides instructions and data to the processor 1201. Memory 1202 may also include non-volatile random access memory. The memory 1202 may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and direct bus RAM (DR RAM).
The bus 1205 may include a power bus, a control bus, a status signal bus, and the like, in addition to a data bus. But for clarity of illustration the various busses are labeled as busses 1205 in figure 12.
The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded or executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, 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, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more collections of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium may be a Solid State Drive (SSD).
Embodiments of the present application also provide a computer readable medium for storing a computer program code, the computer program including instructions for executing the tooth abnormal state detection method of the embodiments of the present application among the above-mentioned methods. The readable medium may be a read-only memory (ROM) or a Random Access Memory (RAM), which is not limited in this embodiment of the present application.
The present application also provides a computer program product comprising instructions that, when executed, perform operations corresponding to the above-described methods with the detection apparatus or the smart toothbrush device, respectively.
An embodiment of the present application further provides a system chip, where the system chip includes: a processing unit, which may be, for example, a processor, and a communication unit, which may be, for example, an input/output interface, a pin or a circuit, etc. The processing unit can execute computer instructions to enable a chip in the device to execute any one of the above methods for detecting abnormal tooth states provided by the embodiments of the present application.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A detection method of tooth abnormal state is applied to an intelligent toothbrush, and is characterized in that a pressure sensor is arranged in a brush head of the intelligent toothbrush, and the detection method comprises the following steps:
s101, when a brush head of the intelligent toothbrush moves on a first tooth surface, acquiring pressure data through a pressure sensor to construct a pressure data set, wherein the pressure data set comprises a first pressure data set, the first pressure data set is composed of pressure data acquired when the first sensor moves at a first tooth position of the first tooth surface, the first pressure data set comprises a first time period subset, and the first time period subset is the pressure data set acquired by the pressure sensor at the first tooth position of the first tooth surface;
s102: obtaining a first time period subset of the first pressure data set and determining a representative value for the first time period subset;
s103: acquiring an abnormal measurement interval of the first tooth surface, and determining the tooth abnormal state of the first tooth position according to the position relation between the representative value of the first time interval subset and the abnormal measurement interval;
s104: and if the representative value is within the abnormal measurement interval, determining that the first determined first tooth position is in a first abnormal state.
2. A method for detecting abnormal state of teeth according to claim 1, wherein the number of pressure sensors is at least 2, the pressure data set further comprises a second pressure data set consisting of pressure data collected by the second pressure sensor while moving at the first tooth position of the first tooth surface, the second pressure data set comprises a first time period subset; the detection method further comprises the following steps:
s201: obtaining a first time period subset of the second pressure data set, and determining a representative value for the first tooth position from the first time period subset of the second pressure data set;
s202: determining a second abnormal state of the first tooth position according to the position relation between the representative value and the abnormal measurement interval;
s203: and comparing the first abnormal state with the second abnormal state, and if the first abnormal state and the second abnormal state are the same abnormal tooth state, adjusting the tooth evaluation parameter of the first tooth surface according to the abnormal tooth state.
3. The method according to claim 1 or 2, wherein the tooth abnormal state includes a tooth missing state, the method further includes presetting a standard measurement interval, the abnormal measurement interval includes a first abnormal measurement interval, values in the standard measurement interval are all larger than values in the first abnormal interval, and if the representative value is in the first abnormal measurement interval, the tooth abnormal state is determined to be the tooth missing state.
4. The method of claim 3, wherein the tooth evaluation parameters comprise a tooth zone integrity factor, and wherein adjusting the brushing parameters of the smart toothbrush according to the tooth abnormal state comprises:
reducing the tooth zone integrity factor by a first proportion.
5. The method according to claim 3, wherein the abnormal tooth state includes a convex tooth state, the abnormal measurement interval further includes a second abnormal measurement interval, the second abnormal interval is greater than the standard measurement interval, and if the representative value is within the second abnormal measurement interval, the abnormal tooth state is determined as the convex tooth state.
6. The method according to claim 5, wherein the tooth evaluation parameter includes a tooth surface integrity factor, and the adjusting the first tooth surface parameter according to the tooth abnormal state includes:
reducing the tooth surface integrity factor by a first proportion.
7. The tooth abnormal position detection method according to any one of claims 1 to 6, wherein said step S101 further comprises:
the bristles of the intelligent toothbrush are controlled to abut against the first tooth surface with a certain force, and the brush head of the intelligent toothbrush is controlled to pass through the first tooth surface at a constant speed.
8. A tooth abnormal state detection device for an intelligent toothbrush is characterized in that a pressure sensor is arranged in a brush head of the intelligent toothbrush, and the detection device comprises:
the pressure data acquisition unit is used for acquiring pressure data through the pressure sensor and constructing a pressure data set when bristles of the intelligent toothbrush are abutted against the first tooth surface with a certain force and the brush head of the intelligent toothbrush is controlled to pass through the first tooth surface at a constant speed;
a representative value determining unit for receiving the pressure data set and calculating a representative value of a first tooth position in the first tooth surface from the pressure data set;
and an abnormal state determination unit for receiving the representative value and the abnormal measurement section of the first tooth surface, and determining the tooth abnormal state of the first tooth position according to a positional relationship between the representative value and the abnormal measurement section.
9. A microprocessor chip for an intelligent toothbrush, wherein the microprocessor chip comprises the abnormal tooth state detection device according to claim 8.
10. A computer-readable storage medium, having stored thereon a computer program or instructions, which, when read and executed, cause a smart toothbrush to perform the method of any one of claims 1 to 7.
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Application publication date: 20210420 |