CN113835536B - Coordinate calibration method for correct reading and writing and smart phone watch - Google Patents
Coordinate calibration method for correct reading and writing and smart phone watch Download PDFInfo
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- CN113835536B CN113835536B CN202111139213.9A CN202111139213A CN113835536B CN 113835536 B CN113835536 B CN 113835536B CN 202111139213 A CN202111139213 A CN 202111139213A CN 113835536 B CN113835536 B CN 113835536B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0346—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of the device orientation or free movement in a 3D space, e.g. 3D mice, 6-DOF [six degrees of freedom] pointers using gyroscopes, accelerometers or tilt-sensors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention provides a coordinate calibration method for correct reading and writing and a smart phone watch, wherein the method comprises the following steps: establishing a three-dimensional coordinate system; determining coordinate parameters of the evaluation reading and writing gesture and corresponding coordinate ranges of correct reading and writing; collecting basic data in real time in a read-write mode to form read-write data, and importing the read-write data into a three-dimensional coordinate system to generate a table and chair three-dimensional model; and comparing coordinate parameters according to the set mode, and judging whether the read-write gesture meets the requirement. The intelligent telephone watch is internally provided with a single-chip microcomputer, and the single-chip microcomputer comprises a coordinate module, a reference module, a data acquisition module, a data preprocessing module, a model generation module and a comparison module; the method is used for judging whether the read-write gesture meets the requirement or not. The invention simplifies the judgment of the reading and writing gesture, avoids misjudgment and improves the accuracy of the judgment of the reading and writing gesture by introducing the three-dimensional model of the desk and the chair.
Description
Technical Field
The invention relates to the technical field of intelligent recognition of reading and writing gestures, in particular to a coordinate calibration method for correct reading and writing and a smart phone watch.
Background
Poor reading and writing postures of children can bring health damage to vision, vertebrae and other physical aspects, and the method for judging the reading and writing postures and the related portable equipment (such as a smart phone watch) are promoted.
However, the motions and postures of the person are varied, and the similar motions are more, for example, sitting postures, countersunk postures, hand support cheek postures and the like exist, and the accuracy of judgment is greatly affected; the misjudgment rate of the existing method and product on correct reading and writing is high.
Disclosure of Invention
In order to solve the technical problems, the invention provides a coordinate calibration method for correct reading and writing, which comprises the following steps:
s100, establishing a three-dimensional coordinate system;
s200, determining coordinate parameters for evaluating the reading and writing posture and corresponding coordinate ranges for correct reading and writing;
s300, collecting basic data in real time in a read-write mode to form read-write data, and importing the read-write data into a three-dimensional coordinate system to generate a table and chair three-dimensional model;
s400, comparing coordinate parameters according to the set mode, and judging whether the read-write gesture meets the requirement.
Optionally, in step S300, the read-write data includes distance data, angle data, and movement direction data;
the distance data at least comprises distance data between eyes and a table top and distance between a body and the edge of the table top;
the angle type data at least comprises arm angle data and body angle data;
the movement direction class data includes at least movement direction data of the arm and the body.
Optionally, in step S300, the three-dimensional table and chair model is generated by sequentially selecting one of the following conditions:
condition one: generating table and chair height data according to user input;
condition II: generating table and chair height data obtained by calculation and conversion according to the read-write data;
and (3) a third condition: and generating according to preset standard table and chair height data.
Optionally, in step S400, the setting mode includes a strict mode, an easy mode, and a free mode;
the strict mode is used for sending out an alarm when reading and writing in a non-correct posture or reading and writing in a close range;
the light mode is used for giving an alarm only when reading and writing in close range and correcting the gesture;
the free mode is used for recognizing various gestures and motions and giving out warning when reading and writing in a close range.
Optionally, in step S300, correction processing is performed after the transmission of the basic data, which specifically includes:
calculating an error value of the basic data by adopting a preset algorithm;
and if the absolute value of the error value is larger than the set error threshold value, correcting the basic data according to the error value.
The invention also provides a correct read-write coordinate calibration smart phone watch, wherein a single-chip microcomputer is arranged in the smart phone watch, and the single-chip microcomputer comprises a coordinate module, a reference module, a data acquisition module, a data preprocessing module, a model generation module and a comparison module;
the coordinate module is used for establishing a three-dimensional coordinate system;
the reference module is used for determining and storing coordinate parameters for evaluating the reading and writing gesture and corresponding coordinate ranges for correct reading and writing;
the data acquisition module is used for acquiring basic data in real time in a read-write mode;
the data preprocessing module is used for preprocessing basic data to form read-write data, and importing the read-write data into a three-dimensional coordinate system;
the model generation module is used for generating a three-dimensional table and chair model;
and the comparison module is used for comparing coordinate parameters according to the set mode and judging whether the read-write gesture meets the requirement.
Optionally, the data acquisition module is connected with a triaxial acceleration sensor and a distance sensor, the triaxial acceleration sensor is used for detecting three axial accelerations, and the distance sensor adopts a laser ranging sensor and is used for measuring the distance between eyes, a table or a body and the distance sensor;
the data preprocessing module preprocesses the acceleration and the measured distance to form read-write data, wherein the read-write data comprises distance data, angle data and movement direction data;
the distance data at least comprises distance data between eyes and a table top and distance between a body and the edge of the table top;
the angle type data at least comprises arm angle data and body angle data;
the movement direction class data includes at least movement direction data of the arm and the body.
Optionally, the model generation module is internally provided with a logic sub-module, a table and chair setting sub-module, a data conversion sub-module and a default sub-module;
the table and chair setting submodule is used for inputting table and chair height data by a user;
the data conversion submodule is used for obtaining table and chair height data obtained by carrying out operation conversion on read-write data;
the default sub-module is used for presetting standard table and chair height data;
the logic submodule is used for sequentially selecting the table and chair setting submodule, the data conversion submodule and the table and chair height data of the default submodule according to the setting logic to generate a table and chair three-dimensional model.
Optionally, the comparison module is internally provided with a mode selection submodule, and the mode selection submodule comprises a strict mode, an easy mode and a free mode; the single-chip microcomputer is connected with a vibration device;
the strict mode is used for controlling the vibration device to send out a warning in a vibration mode when the device is used for reading and writing in a non-correct posture or short-distance reading and writing;
the light mode is used for controlling the vibration device to give out a warning in a vibration mode when only reading and writing in a close-range posture correction mode;
the free mode is used for recognizing various postures and motions, and controlling the vibration device to send out a warning in a vibration mode when the user reads and writes in a short distance.
Optionally, the laser ranging sensor is configured with a laser emission circuit, where the laser emission circuit includes a driving chip X, a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C0, a second capacitor C1, a third capacitor C2, a field effect transistor MOS, a light emitting diode D3, a first zener diode D1, and a second zener diode D2;
one end of the first resistor R1 is connected with the positive electrode of the direct current power supply, and the other end of the first resistor R1 is connected with the power supply input terminal 1 of the driving chip X; the power input terminal 1 of the driving chip X is connected with one end of a first capacitor C0, and the other end of the first capacitor C0 is connected with the power input terminal 4 of the driving chip X; the terminal 2 of the driving chip X is connected with the previous stage pulse signal, the terminal 5 of the driving chip X is connected with the negative electrode of the direct current power supply, and the terminal 6 of the driving chip X is connected with the terminal 7; the terminal 8 of the driving chip X is connected with the cathode of the first zener diode D1, the anode of the first zener diode D1 is connected with the cathode of the second zener diode D2, and the anode of the second zener diode D2 is connected with the cathode of the direct current power supply; one end of the second resistor R2 is connected with the terminal 6 of the driving chip X, and the other end of the second resistor R2 is connected with the gate electrode of the field effect transistor MOS; the drain electrode of the field effect transistor MOS is connected with one end of a third resistor R3, and the other end of the third resistor R3 is connected with the positive electrode of the direct current power supply; the source electrode of the field effect transistor MOS is connected with the positive electrode of the light emitting diode D3, and the negative electrode of the light emitting diode D3 is connected with the ground; one end of the second capacitor C1 is connected with the drain electrode of the field effect transistor MOS, and the other end of the second capacitor C1 is connected with the ground; one end of the third capacitor C2 is connected with the drain electrode of the field effect transistor MOS, and the other end of the third capacitor C2 is connected with the ground; the negative pole of the power is grounded.
The invention relates to a coordinate calibration method for correct reading and writing and a smart phone watch, wherein a single-chip Microcomputer (MCU) is arranged in the smart phone watch, the single-chip microcomputer comprises a coordinate module, a reference module, a data acquisition module, a data preprocessing module, a model generation module and a comparison module, the method is implemented, a three-dimensional coordinate system is established, coordinate parameters for evaluating reading and writing gestures and corresponding coordinate ranges for correct reading and writing are determined, basic data are acquired in real time in a reading and writing mode, the basic data form the reading and writing data, the reading and writing data are imported into the three-dimensional coordinate system, a three-dimensional table and chair model is generated in the three-dimensional coordinate system, and coordinate parameter comparison is carried out according to the set mode, so that whether the reading and writing gestures meet requirements is judged; according to the scheme, real-time read-write data are imported into a three-dimensional coordinate system, and real-time coordinate parameters formed after the read-write data are imported and coordinate ranges corresponding to the coordinate parameters which are correctly read and written are compared in the three-dimensional coordinate system; if the real-time coordinate parameters deviate from the coordinate ranges corresponding to the coordinate parameters which are correctly read and written, the read-write gesture is not in accordance with the requirements; if the real-time coordinate parameters do not deviate from the coordinate ranges corresponding to the coordinate parameters which are correctly read and written, the read-write gesture is indicated to meet the requirements; according to the scheme, the reading and writing gesture judgment is simplified, the error judgment is avoided by introducing the three-dimensional table and chair model, and the accuracy of the reading and writing gesture judgment is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a flow chart of a method for calibrating a coordinate of correct reading and writing in an embodiment of the invention;
fig. 2 is a schematic diagram of an internal structure of a smart phone watch with correctly read-written coordinate calibration according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a laser emission circuit in an embodiment of a properly read-written coordinate-calibrated smart phone watch of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
As shown in fig. 1, the embodiment of the invention provides a coordinate calibration method for correct reading and writing, which comprises the following steps:
s100, establishing a three-dimensional coordinate system;
s200, determining coordinate parameters for evaluating the reading and writing posture and corresponding coordinate ranges for correct reading and writing;
s300, collecting basic data in real time in a read-write mode to form read-write data, and importing the read-write data into a three-dimensional coordinate system to generate a table and chair three-dimensional model;
s400, comparing coordinate parameters according to the set mode, and judging whether the read-write gesture meets the requirement.
The working principle and beneficial effects of the technical scheme are as follows: according to the scheme, a three-dimensional coordinate system is established, coordinate parameters for evaluating the reading and writing posture and corresponding coordinate ranges for correct reading and writing are determined, basic data are collected in real time in a reading and writing mode, the basic data are used for forming the reading and writing data, the reading and writing data are imported into the three-dimensional coordinate system, a table and chair three-dimensional model is generated in the three-dimensional coordinate system, coordinate parameter comparison is carried out according to a set mode, and therefore whether the reading and writing posture meets requirements is judged; according to the scheme, real-time read-write data are imported into a three-dimensional coordinate system, and real-time coordinate parameters formed after the read-write data are imported and coordinate ranges corresponding to the coordinate parameters which are correctly read and written are compared in the three-dimensional coordinate system; if the real-time coordinate parameters deviate from the coordinate ranges corresponding to the coordinate parameters which are correctly read and written, the read-write gesture is not in accordance with the requirements; if the real-time coordinate parameters do not deviate from the coordinate ranges corresponding to the coordinate parameters which are correctly read and written, the read-write gesture is indicated to meet the requirements; according to the scheme, the reading and writing gesture judgment is simplified, the error judgment is avoided by introducing the three-dimensional table and chair model, and the accuracy of the reading and writing gesture judgment is improved.
In one embodiment, in step S300, the read-write data includes distance-type data, angle-type data, and movement direction-type data;
the distance data at least comprises distance data between eyes and a table top and distance between a body and the edge of the table top;
the angle type data at least comprises arm angle data and body angle data;
the movement direction class data includes at least movement direction data of the arm and the body.
The working principle and beneficial effects of the technical scheme are as follows: according to the scheme, the read-write data formed by the detected basic data comprises distance data, angle data and motion direction data, and the static aspect and the dynamic aspect of the read-write gesture are fully considered, so that the real-time performance and the authenticity of the coordinate parameters after the three-dimensional coordinate system is imported are ensured, the coordinate parameters are compared on the basis, and the accuracy of judging the read-write gesture can be improved.
In one embodiment, in step S300, the three-dimensional table and chair model is generated by sequentially selecting one of the following conditions:
condition one: generating table and chair height data according to user input;
condition II: generating table and chair height data obtained by calculation and conversion according to the read-write data;
and (3) a third condition: and generating according to preset standard table and chair height data.
The working principle and beneficial effects of the technical scheme are as follows: three conditions are selectable in the generation of the table and chair three-dimensional model, and the three conditions are selected according to the arrangement sequence; the table and chair three-dimensional model is generated according to the table and chair height data input by the user, and the data input by the user can be completely consistent with the actual table and chair data, so that the coincidence of the table and chair three-dimensional model and the actual table and chair can be improved, and the error judgment or the influence on the accuracy of reading and writing judgment due to the fact that the table and chair three-dimensional model is not in coincidence is avoided; under the condition that the table and chair height data are not input by a user, the table and chair three-dimensional model is generated by selecting the table and chair height data obtained through operation and conversion according to the read-write data, and the reliability is relatively high because the read-write data are obtained from the basic data which are actually detected.
In one embodiment, in step S400, the setting mode includes a strict mode, an easy mode, and a free mode;
the strict mode is used for sending out an alarm when reading and writing in a non-correct posture or reading and writing in a close range;
the light mode is used for giving an alarm only when reading and writing in close range and correcting the gesture;
the free mode is used for recognizing various gestures and motions and giving out warning when reading and writing in a close range.
The working principle and beneficial effects of the technical scheme are as follows: in the scheme, the strict mode can carry out vibration reminding in both non-posture reading and writing and near-distance reading and writing, the distance between eyes and a table surface is smaller than the lower limit value (such as 33 cm) in the reading and writing process, the reading and writing postures of children are quite different and show nonlinear irregular change states, but the strict mode defines that the correct reading and writing postures are only one: the waist is straight and is at a fist distance from the tabletop, eyes are not less than 33cm away from the tabletop, the left hand holds the paper, and the right hand holds the pen for writing; the light mode only vibrates when the close-range gesture correcting read-write mode is adopted, and the close-range gesture correcting read-write mode is adopted, but the distance between eyes and a table surface is smaller than a lower limit value (such as 33 cm); the free mode can be recorded, and the vibration is read and written in a close range, so that all the gestures are automatically recognized and the motions are distinguished; the three modes can be suitable for multiple scenes, and the easy mode is generally recommended to be started during school lessons, and the inter-lesson time is set to be an automatic mode; recommending to start a strict mode during handwriting and handwriting practice learning; recommending to set a strict mode during home operation; can combine the read-write rewards under the strict mode to more effectively promote the enthusiasm of students and children, get rid of bad read-write postures early, and walk on a healthy and beneficial growing track.
In one embodiment, in step S300, the correction process is performed after the transmission of the basic data, which specifically includes:
calculating an error value of the basic data by adopting a preset algorithm;
and if the absolute value of the error value is larger than the set error threshold value, correcting the basic data according to the error value.
The working principle and beneficial effects of the technical scheme are as follows: according to the scheme, error value calculation is carried out after basic data transmission, comparison between the error value and an error threshold value is obtained through calculation, if the absolute value of the error value is larger than the set error threshold value, the error value is beyond an acceptable range, and at the moment, the basic data is corrected according to the error value, so that the anti-interference performance of the basic data transmission is improved, and the data precision is further improved; the comparison and judgment are carried out before correction, so that the calculated amount in the correction process can be reduced, the calculation speed is improved, and the energy consumption of equipment is saved.
In one embodiment, the preset algorithm for calculating the error value of the base data is as follows:
in the above formula, δ represents an error value of the base data; d represents a signal value of the base data; epsilon D A signal peak neighborhood representing the underlying data; μ represents a point within the vicinity of the signal peak;
and representing the bias of the signal distribution curve function of the basic data in the vicinity of the signal peak.
The working principle and beneficial effects of the technical scheme are as follows: the preset algorithm for calculating the error value of the basic data is adopted, the signal value in the basic data transmission is taken as an analysis object, and the polynomial fitting principle is utilized to analyze the signal distribution curve, so that the error value of the signal in the basic data transmission due to interference is calculated.
As shown in fig. 2, the embodiment of the invention provides a correctly read-written coordinate calibration smart phone watch, in which a single-chip microcomputer 10 is built, and the single-chip microcomputer 10 comprises a coordinate module 103, a reference module 105, a data acquisition module 101, a data preprocessing module 102, a model generation module 104 and a comparison module 106;
the coordinate module 103 is used for establishing a three-dimensional coordinate system;
the reference module 105 is used for determining and storing coordinate parameters for evaluating the read-write gesture and corresponding coordinate ranges for correct reading and writing;
the data acquisition module 101 is used for acquiring basic data in real time in a read-write mode;
the data preprocessing module 102 is configured to preprocess the basic data to form read-write data, and import the read-write data into a three-dimensional coordinate system;
the model generation module 104 is used for generating a three-dimensional table and chair model;
the comparison module 105 is configured to compare coordinate parameters according to a set mode, and determine whether the read-write gesture meets the requirement.
The working principle and beneficial effects of the technical scheme are as follows: according to the scheme, a single-chip Microcomputer (MCU) is built in a smart phone watch, the single-chip microcomputer comprises a coordinate module, a reference module, a data acquisition module, a data preprocessing module, a model generation module and a comparison module, the method is implemented, coordinate parameters for evaluating a read-write gesture and corresponding correct read-write coordinate ranges are determined by establishing a three-dimensional coordinate system, basic data are acquired in real time in a read-write mode, read-write data are formed by the basic data, the read-write data are imported into the three-dimensional coordinate system, a table and chair three-dimensional model is generated in the three-dimensional coordinate system, coordinate parameter comparison is carried out according to a set mode, and therefore whether the read-write gesture meets requirements is judged; according to the scheme, real-time read-write data are imported into a three-dimensional coordinate system, and real-time coordinate parameters formed after the read-write data are imported and coordinate ranges corresponding to the coordinate parameters which are correctly read and written are compared in the three-dimensional coordinate system; if the real-time coordinate parameters deviate from the coordinate ranges corresponding to the coordinate parameters which are correctly read and written, the read-write gesture is not in accordance with the requirements; if the real-time coordinate parameters do not deviate from the coordinate ranges corresponding to the coordinate parameters which are correctly read and written, the read-write gesture is indicated to meet the requirements; according to the scheme, the reading and writing gesture judgment is simplified, the error judgment is avoided by introducing the three-dimensional table and chair model, and the accuracy of the reading and writing gesture judgment is improved.
In one embodiment, as shown in fig. 2, the data acquisition module 101 is connected with a triaxial acceleration sensor 20 and a distance sensor 30, where the triaxial acceleration sensor 20 is used for detecting three axial accelerations, and the distance sensor 30 is a laser ranging sensor for measuring the distance between the eyes, the table or the body and the distance sensor;
the data preprocessing module 102 preprocesses the acceleration and the measured distance to form read-write data, wherein the read-write data comprises distance data, angle data and movement direction data;
the distance data at least comprises distance data between eyes and a table top and distance between a body and the edge of the table top;
the angle type data at least comprises arm angle data and body angle data;
the movement direction class data includes at least movement direction data of the arm and the body.
The working principle and beneficial effects of the technical scheme are as follows: the three-axis acceleration sensor and the three-axis distance sensor are respectively used for detecting acceleration and distance data, and the acceleration and the distance obtained by direct detection of the sensors are basic data; the acceleration and the measured distance are combined through a data preprocessing module and preprocessed, read-write data comprising distance data, angle data and movement direction data are formed by detected basic data, wherein the angle data can be obtained through conversion and conversion of the acceleration and the distance, and the static aspect and the dynamic aspect of the read-write gesture are fully considered, so that the real-time property and the authenticity of the coordinate parameters after the three-dimensional coordinate system is imported are ensured, and the coordinate parameter comparison is carried out on the basis, so that the accuracy of judging the read-write gesture can be improved; the plurality of distance sensors can be arranged and respectively positioned at different positions of the smart phone watch, and when in detection, the data are detected by the distance sensors with proper angles through angle suitability judgment; the distance sensor adopts a laser distance measuring sensor, so that the measuring precision is high and the sensor is not easily influenced by the environment.
In one embodiment, the model generation module is internally provided with a logic sub-module, a table and chair setting sub-module, a data conversion sub-module and a default sub-module;
the table and chair setting submodule is used for inputting table and chair height data by a user;
the data conversion submodule is used for obtaining table and chair height data obtained by carrying out operation conversion on read-write data;
the default sub-module is used for presetting standard table and chair height data;
the logic submodule is used for sequentially selecting the table and chair setting submodule, the data conversion submodule and the table and chair height data of the default submodule according to the setting logic to generate a table and chair three-dimensional model.
The working principle and beneficial effects of the technical scheme are as follows: the three-dimensional model generation method comprises the steps that a logic sub-module, a table and chair setting sub-module, a data conversion sub-module and a default sub-module are arranged in a model generation module, three selectable conditions for table and chair three-dimensional model generation are provided, and the three conditions are controlled by the logic sub-module to be selected according to the arrangement sequence; the table and chair three-dimensional model is generated according to the table and chair height data input by the user, and the data input by the user can be completely consistent with the actual table and chair data, so that the coincidence of the table and chair three-dimensional model and the actual table and chair can be improved, and the error judgment or the influence on the accuracy of reading and writing judgment due to the fact that the table and chair three-dimensional model is not in coincidence is avoided; under the condition that the table and chair height data are not input by a user, the table and chair three-dimensional model is generated by selecting the table and chair height data obtained through operation and conversion according to the read-write data, and the reliability is relatively high because the read-write data are obtained from the basic data which are actually detected.
In one embodiment, the contrast module is built-in with a mode selection sub-module comprising a strict mode, an relaxed mode, and a free mode; the single-chip microcomputer is connected with a vibration device;
the strict mode is used for controlling the vibration device to send out a warning in a vibration mode when the device is used for reading and writing in a non-correct posture or short-distance reading and writing;
the light mode is used for controlling the vibration device to give out a warning in a vibration mode when only reading and writing in a close-range posture correction mode;
the free mode is used for recognizing various postures and motions, and controlling the vibration device to send out a warning in a vibration mode when the user reads and writes in a short distance.
The working principle and beneficial effects of the technical scheme are as follows: according to the scheme, the mode selection submodule is arranged in the comparison module, the single-chip microcomputer is connected with the vibration device, three optional modes are set in the mode selection submodule, vibration reminding can be carried out on the strict mode in non-normal reading and writing and close-range reading and writing, the child reading and writing postures are in nonlinear irregular change states in a quite different mode, but the strict mode defines the correct reading and writing posture to be only one: the waist is straight and is separated from the tabletop by a fist distance, the distance between eyes and the tabletop is more than 33cm, the left hand holds the paper, and the right hand holds the pen for writing; the light mode only vibrates when reading and writing in close range and correcting posture; the free mode can be recorded, and the vibration is read and written in a close range, so that all the gestures are automatically recognized and the motions are distinguished; the three modes can be suitable for multiple scenes, and the easy mode is generally recommended to be started during school lessons, and the inter-lesson time is set to be an automatic mode; recommending to start a strict mode during handwriting and handwriting practice learning; recommending to set a strict mode during home operation; can combine the read-write rewards under the strict mode to more effectively promote the enthusiasm of students and children, get rid of bad read-write postures early, and walk on a healthy and beneficial growing track.
In one embodiment, as shown in fig. 3, the laser ranging sensor is configured with a laser emitting circuit, and the laser emitting circuit includes a driving chip X, a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C0, a second capacitor C1, a third capacitor C2, a field effect transistor MOS, a light emitting diode D3, a first zener diode D1, and a second zener diode D2;
one end of the first resistor R1 is connected with the positive electrode of the direct current power supply, and the other end of the first resistor R1 is connected with the power supply input terminal 1 of the driving chip X; the power input terminal 1 of the driving chip X is connected with one end of a first capacitor C0, and the other end of the first capacitor C0 is connected with the power input terminal 4 of the driving chip X; the terminal 2 of the driving chip X is connected with the previous stage pulse signal, the terminal 5 of the driving chip X is connected with the negative electrode of the direct current power supply, and the terminal 6 of the driving chip X is connected with the terminal 7; the terminal 8 of the driving chip X is connected with the cathode of the first zener diode D1, the anode of the first zener diode D1 is connected with the cathode of the second zener diode D2, and the anode of the second zener diode D2 is connected with the cathode of the direct current power supply; one end of the second resistor R2 is connected with the terminal 6 of the driving chip X, and the other end of the second resistor R2 is connected with the gate electrode of the field effect transistor MOS; the drain electrode of the field effect transistor MOS is connected with one end of a third resistor R3, and the other end of the third resistor R3 is connected with the positive electrode of the direct current power supply; the source electrode of the field effect transistor MOS is connected with the positive electrode of the light emitting diode D3, and the negative electrode of the light emitting diode D3 is connected with the ground; one end of the second capacitor C1 is connected with the drain electrode of the field effect transistor MOS, and the other end of the second capacitor C1 is connected with the ground; one end of the third capacitor C2 is connected with the drain electrode of the field effect transistor MOS, and the other end of the third capacitor C2 is connected with the ground; the negative pole of the power is grounded.
The working principle and beneficial effects of the technical scheme are as follows: one end of a first resistor R1 in the scheme is connected with the positive electrode of a direct current power supply, the other end of the first resistor R1 is connected with a power input terminal 1 of a driving chip X, and a power input loop of the input end of the driving chip X is formed between the connection and the ground; the power input terminal 1 of the driving chip X is connected with one end of a first capacitor C0, the other end of the first capacitor C0 is connected with the power input terminal 4 of the driving chip X, and filtering is performed between the power input terminal 1 and the power input terminal 4 connected to the driving chip X; the terminal 2 of the driving chip X is connected with the previous stage pulse signal and is used for opening the output terminal 6 and the output terminal 7 of the driving chip X to send signals outwards; the terminal 5 of the driving chip X is connected with the negative electrode of the direct current power supply to form a complete power supply loop of the input end of the driving chip X; the terminal 6 and the terminal 7 of the driving chip X are connected for sending out signals together; the terminal 8 of the driving chip X is connected with the cathode of the first zener diode D1, the anode of the first zener diode D1 is connected with the cathode of the second zener diode D2, the anode of the second zener diode D2 is connected with the cathode of the direct current power supply, and the connection forms a power supply loop of the output end of the driving chip X; one end of the second resistor R2 is connected with the terminal 6 of the driving chip X, the other end of the second resistor R2 is connected with the gate electrode of the field effect transistor MOS, and a gate electrode input loop of the field effect transistor MOS is formed between the connection and the ground; the drain electrode of the field effect transistor MOS is connected with one end of R3, the other end of R3 is connected with the positive electrode of the direct current power supply, and an input loop of the drain electrode of the field effect transistor MOS is formed between the connection and the ground; the source electrode of the field effect transistor MOS is connected with the positive electrode of the light emitting diode D3, the negative electrode of the light emitting diode D3 is connected with the ground, and a laser emission loop is formed between the connection and the ground; one end of the second capacitor C1 is connected with the drain electrode of the field effect transistor MOS, the other end of the second capacitor C1 is connected with the ground, and the first filter circuit is connected with the second capacitor C1 to form a luminous loop; one end of the third capacitor C2 is connected with the drain electrode of the field effect transistor MOS, the other end of the third capacitor C2 is connected with the ground, and the second filter circuit is connected with the ground to form a light-emitting loop; the negative electrode of the power supply is grounded; the above connections are all electrical connections. The first resistor R1 is a power supply input resistor of the driving chip X and is used for limiting the input current of the driving chip X and preventing the driving chip X from being burnt due to overlarge input current; the pulse signal is a starting signal of the driving chip X generated by the executor after the upper controller sends out a command; driving a chip X with a selectable point frequency suitable for short-distance measurement; the terminal 6 and the terminal 7 of the driving chip X are connected and jointly transmit a conduction signal to the field effect transistor MOS; the first capacitor C0 is used for filtering high-frequency source signals coupled in the power input of the driving chip X, so that the input source of the driving chip does not contain high-frequency signals, and the driving chip is prevented from being triggered by mistake; the circuit composed of the first zener diode D1 and the second zener diode D2 is used for strictly dividing the power supply of the output end of the driving chip X equally and applying the power supply between the terminal 7 and the terminal 8 and between the terminal 5 and the terminal 6 of the driving chip X; the second resistor R2 is an input resistor of the field effect transistor MOS and is used for limiting the gate current of the field effect transistor MOS so as to prevent the field effect transistor MOS from being burnt out due to excessive current; the third resistor R3 is a drain resistor of the field effect transistor MOS, and is used to limit the drain current of the field effect transistor MOS; the light emitting diode D3 is used for generating laser; the first capacitor C1 and the second capacitor C2 form a filter circuit, and interference signals of cathodes of the field effect transistors MOS and D3 are filtered; the field effect transistor MOS is turned on and off by itself to control D3 emission and terminate light emission; when the terminal 2 of the driving chip X receives the pulse signal, the output terminal 6 and the terminal 7 of the driving chip X jointly output the signal, the signal is input into the gate electrode of the field effect transistor MOS through the resistor R2, so that the drain electrode and the source electrode of the field effect transistor MOS are conducted, and the light emitting diode D3 is conducted to emit light; the laser emission circuit is relatively simple in whole, and the possibility of false light emission or non-light emission caused by electromagnetic interference possibly received by the circuit is reduced to the greatest extent; the circuit is mainly based on the control of the light-emitting driving chip, so that the laser emitting diode D3 generates laser, and the design requirement of the laser emitting circuit can be met as long as the light-emitting driving chip with proper point frequency is selected, so that the circuit complexity and the instability of the circuit performance which are commonly existed in the design of the existing laser emitting circuit are avoided.
When the invention is used for comparison and judgment according to the coordinate parameters, the historical inertial data stored in the storage device and other set standard distances can be combined for comparison, and the accuracy of gesture recognition can be ensured to be more than 90%. In addition, the smart phone watch is also provided with abnormal condition judgment, for example: if the distance measured by the distance sensor is particularly close (less than 1 cm), the sensor can be considered to be blocked; if more than two distance sensors are particularly close (less than 1 cm), the distance sensors are considered to be shielded by cuffs, and if the distance sensors are judged to be in a read-write posture at the moment, vibration reminding is carried out. The smart phone watch can be connected with a handheld terminal of a parent, such as a smart phone and the like, through network communication, and the parent can open or close the function of correcting the read-write gesture of the smart phone watch through the handheld terminal, so that the product has more flexibility, and frequent vibration in some occasions is avoided, and user experience is reduced.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (8)
1. The intelligent telephone watch is characterized in that a single-chip microcomputer is arranged in the intelligent telephone watch, and the single-chip microcomputer comprises a coordinate module, a reference module, a data acquisition module, a data preprocessing module, a model generation module and a comparison module;
the coordinate module is used for establishing a three-dimensional coordinate system;
the reference module is used for determining and storing coordinate parameters for evaluating the reading and writing gesture and corresponding coordinate ranges for correct reading and writing;
the data acquisition module is used for acquiring basic data in real time in a read-write mode;
the data preprocessing module is used for preprocessing basic data to form read-write data, and importing the read-write data into a three-dimensional coordinate system;
the model generation module is used for generating a three-dimensional table and chair model;
the comparison module is used for comparing coordinate parameters according to a set mode and judging whether the read-write gesture meets the requirement or not;
the comparison module is internally provided with a mode selection submodule, and the mode selection submodule comprises a strict mode, an easy mode and a free mode;
the data acquisition module is connected with a triaxial acceleration sensor and a distance sensor, the triaxial acceleration sensor is used for detecting three axial accelerations, and the distance sensor adopts a laser ranging sensor and is used for measuring the distance between eyes, a table or a body and the distance sensor;
the data preprocessing module preprocesses the acceleration and the measured distance to form read-write data, wherein the read-write data comprises distance data, angle data and movement direction data;
the distance data at least comprises distance data between eyes and a table top and distance between a body and the edge of the table top;
the angle type data at least comprises arm angle data and body angle data;
the movement direction data at least comprise movement direction data of arms and bodies;
the laser ranging sensor is configured with a laser emission circuit, and the laser emission circuit comprises a driving chip X, a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C0, a second capacitor C1, a third capacitor C2, a field effect transistor MOS, a light emitting diode D3, a first zener diode D1 and a second zener diode D2;
one end of the first resistor R1 is connected with the positive electrode of the direct current power supply, and the other end of the first resistor R1 is connected with the power supply input terminal 1 of the driving chip X; the power input terminal 1 of the driving chip X is connected with one end of a first capacitor C0, and the other end of the first capacitor C0 is connected with the power input terminal 4 of the driving chip X; the terminal 2 of the driving chip X is connected with the previous stage pulse signal, the terminal 5 of the driving chip X is connected with the negative electrode of the direct current power supply, and the terminal 6 of the driving chip X is connected with the terminal 7; the terminal 8 of the driving chip X is connected with the cathode of the first zener diode D1, the anode of the first zener diode D1 is connected with the cathode of the second zener diode D2, and the anode of the second zener diode D2 is connected with the cathode of the direct current power supply; one end of the second resistor R2 is connected with the terminal 6 of the driving chip X, and the other end of the second resistor R2 is connected with the gate electrode of the field effect transistor MOS; the drain electrode of the field effect transistor MOS is connected with one end of a third resistor R3, and the other end of the third resistor R3 is connected with the positive electrode of the direct current power supply; the source electrode of the field effect transistor MOS is connected with the positive electrode of the light emitting diode D3, and the negative electrode of the light emitting diode D3 is connected with the ground; one end of the second capacitor C1 is connected with the drain electrode of the field effect transistor MOS, and the other end of the second capacitor C1 is connected with the ground; one end of the third capacitor C2 is connected with the drain electrode of the field effect transistor MOS, and the other end of the third capacitor C2 is connected with the ground; the negative pole of the power is grounded.
2. The correct read-write coordinate calibration smart phone watch according to claim 1, wherein the model generation module is internally provided with a logic sub-module, a table and chair setting sub-module, a data conversion sub-module and a default sub-module;
the table and chair setting submodule is used for inputting table and chair height data by a user;
the data conversion submodule is used for obtaining table and chair height data obtained by carrying out operation conversion on read-write data;
the default sub-module is used for presetting standard table and chair height data;
the logic submodule is used for sequentially selecting the table and chair setting submodule, the data conversion submodule and the table and chair height data of the default submodule according to the setting logic to generate a table and chair three-dimensional model.
3. The correctly read and write coordinate calibrated smart phone wristwatch of claim 1, wherein the monolithic microcomputer is connected with a vibration device;
the strict mode is used for controlling the vibration device to send out a warning in a vibration mode when the device is used for reading and writing in a non-correct posture or short-distance reading and writing;
the light mode is used for controlling the vibration device to give out a warning in a vibration mode when only reading and writing in a close-range posture correction mode;
the free mode is used for recognizing various postures and motions, and controlling the vibration device to send out a warning in a vibration mode when the user reads and writes in a short distance.
4. The method for calibrating the correct read-write coordinates is characterized in that the method for calibrating the correct read-write coordinates is used for realizing the coordinate calibration of the correct read-write coordinate calibration smart phone watch according to any one of claims 1-3, and comprises the following steps:
s100, establishing a three-dimensional coordinate system;
s200, determining coordinate parameters for evaluating the reading and writing posture and corresponding coordinate ranges for correct reading and writing;
s300, collecting basic data in real time in a read-write mode to form read-write data, and importing the read-write data into a three-dimensional coordinate system to generate a table and chair three-dimensional model;
s400, comparing coordinate parameters according to the set mode, and judging whether the read-write gesture meets the requirement.
5. The method according to claim 4, wherein in step S300, the read-write data includes distance-type data, angle-type data, and movement direction-type data;
the distance data at least comprises distance data between eyes and a table top and distance between a body and the edge of the table top;
the angle type data at least comprises arm angle data and body angle data;
the movement direction class data includes at least movement direction data of the arm and the body.
6. The method for calibrating correct read-write coordinates according to claim 4, wherein in step S300, the three-dimensional table-chair model is generated by sequentially selecting one of the following conditions:
condition one: generating table and chair height data according to user input;
condition II: generating table and chair height data obtained by calculation and conversion according to the read-write data;
and (3) a third condition: and generating according to preset standard table and chair height data.
7. The method according to claim 4, wherein in step S400, the set mode includes a strict mode, an easy mode, and a free mode;
the strict mode is used for sending out an alarm when reading and writing in a non-correct posture or reading and writing in a close range;
the light mode is used for giving an alarm only when reading and writing in close range and correcting the gesture;
the free mode is used for recognizing various gestures and motions and giving out warning when reading and writing in a close range.
8. The method for calibrating correct read-write coordinates according to claim 4, wherein in step S300, correction processing is performed after transmission of the basic data, specifically comprising:
calculating an error value of the basic data by adopting a preset algorithm;
and if the absolute value of the error value is larger than the set error threshold value, correcting the basic data according to the error value.
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