CN113375608A - Sensor position determination method and head-mounted device - Google Patents
Sensor position determination method and head-mounted device Download PDFInfo
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- CN113375608A CN113375608A CN202011567166.3A CN202011567166A CN113375608A CN 113375608 A CN113375608 A CN 113375608A CN 202011567166 A CN202011567166 A CN 202011567166A CN 113375608 A CN113375608 A CN 113375608A
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
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- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/0406—Accessories for helmets
- A42B3/0433—Detecting, signalling or lighting devices
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/0205—Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/024—Detecting, measuring or recording pulse rate or heart rate
- A61B5/02438—Detecting, measuring or recording pulse rate or heart rate with portable devices, e.g. worn by the patient
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
- A61B5/0816—Measuring devices for examining respiratory frequency
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6802—Sensor mounted on worn items
- A61B5/6803—Head-worn items, e.g. helmets, masks, headphones or goggles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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Abstract
The application is suitable for the technical field of wearing, and provides a position determining method of a sensor and a head-mounted device, wherein the position determining method of the sensor comprises the following steps: the method comprises the steps of finding a reference point, mounting components, collecting initial data, collecting first data, collecting second data, sequentially and repeatedly collecting the initial data, collecting the first data and collecting the second data, and determining the position. The head-mounted equipment comprises a cap body and a sensor, and the position range of the sensor is obtained by a position determining method of the sensor. In this way, the required position range of the sensor on the inner side of the cap body along the transverse direction is obtained, namely the position range of the sensor on the inner side of the cap body can be ensured. And the determined position range is the position range capable of acquiring the data of the sensor, so that when the sensor is installed in the position range acquired by the method, the sensor can be ensured to perform detection work well, and the detection result of the sensor is ensured.
Description
Technical Field
The application belongs to the technical field of wearing, and particularly relates to a position determining method of a sensor and a head-mounted device.
Background
With the vigorous development of wearable technology industry, various products are developed endlessly. Among them, the use of head-mounted devices is also becoming more widespread.
At present, a sensor is installed on a safety helmet, a helmet and other helmet bodies of a head-wearing device, so that when the helmet bodies are worn on the head of a human body, the sensor can detect the body temperature, sweat and other health conditions of the human body. However, the position of the sensor on the cap body cannot be ensured, so that the problem that the detection result of the sensor cannot be ensured because the sensor cannot contact the head of the human body after the cap body is worn on the head of the human body is inevitable.
Disclosure of Invention
One of the purposes of the embodiment of the application is as follows: the utility model provides a position determination method of a sensor, which aims to solve the technical problem that the position of the sensor on the cap body can not ensure to influence the detection result of the sensor in the prior art.
In order to solve the technical problem, the embodiment of the application adopts the following technical scheme:
there is provided a position determining method of a sensor, including the steps of:
finding a reference point: determining a reference point at an inner side of a cap body, the reference point being proximate to a brim of the cap body;
component installation: a sensor is arranged at the reference point, and a pressure measuring device is arranged on the inner side of the cap body;
acquiring initial data: the cap body is worn on the head of a human body, the tightness degree of the cap body is adjusted, so that the pressure value of the pressure measuring device is in a preset pressure range, and initial data of the sensor and the pressure measuring device are collected;
collecting first data: moving the sensor from the reference point at least once along one lateral side, each time by 0.5cm, and acquiring first data of the sensor and the pressure measurement device after each movement of the sensor;
collecting second data: moving the sensor from the reference point along the other lateral side at least once, each time by 0.5cm, and acquiring second data of the sensor and the pressure measurement device after each movement of the sensor;
repeating the steps of collecting the initial data, collecting the first data and collecting the second data in sequence;
and (3) position determination: and acquiring a position range of the inner side of the cap body for mounting the sensor according to the initial data, the first data and the second data.
In one embodiment, the predetermined pressure is in a range of 5 to 20 mmHg.
In one embodiment, in the step of mounting the component, a wireless communication module is arranged on the cap body, the wireless communication module is electrically connected to the sensor, and the wireless communication module is in wireless communication connection with an external terminal;
in the step of collecting the initial data, the step of collecting the first data and the step of collecting the second data, the data of the sensor are obtained by the external terminal through the wireless communication module in a wireless mode.
In one embodiment, the reference point is a first reference point, the position of the inner side of the cap body for fitting the forehead of the human body is an origin, and a curve distance range of the first reference point and the origin along a transverse direction is as follows: 14 cm-16 cm.
In one embodiment, the reference point is a second reference point, and the second reference point is arranged at a position where the cap body is opposite to the human ear root along the longitudinal direction.
The embodiment of the application also provides head-mounted equipment, which comprises a cap body capable of being worn on the head of a human body and a sensor arranged on the inner side of the cap body, wherein the sensor is arranged close to the brim of the cap body; the distance range of the central point of the sensor and the curve of the origin along the transverse direction is 12.5 cm-17.5 cm, and the position range of the sensor arranged on the inner side of the cap body is obtained by the position determining method of the sensor.
In one embodiment, the inner side of the cap body is provided with a ring-shaped cap hoop which is close to the brim of the cap body and is arranged to be sleeved on the head of a human body along the circumferential direction; the first reference point is arranged on the inner side of the hat hoop, and the sensor is arranged on the hat hoop.
In one embodiment, the hat hoop is provided with a moving part in a sliding way, and the sensor is arranged on the moving part.
In one embodiment, the head-mounted device further comprises a U-shaped buckle, the sensor is arranged on the U-shaped buckle, and the U-shaped buckle is detachably buckled on the hat band.
The embodiment of the application also provides head-mounted equipment, which comprises a cap body capable of being worn on the head of a human body and a sensor arranged on the inner side of the cap body, wherein the sensor is arranged close to the brim of the cap body; the position range of the sensor arranged on the inner side of the cap body is obtained by the position determining method of the sensor, and the distance range of the central point of the sensor and the second reference point along the curve in the transverse direction is 0.5 cm-3 cm.
The position determining method of the sensor and the head-mounted device have the advantages that: compared with the prior art, in the application, firstly, a sensor is installed on the inner side of the cap body, the sensor is located at a reference point, a pressure measuring device is further arranged on the cap body, the tightness degree of the cap body is adjusted after the cap body is worn on the head of a human body, so that the pressure value of the pressure measuring device is in a preset pressure range, the wearing comfort level of the head of the human body and the detection result of the sensor are guaranteed, and at the moment, initial data of the sensor and the pressure measuring device are collected; then, moving the sensor at least once along one lateral side from the reference point, wherein the movement is 0.5cm each time, and acquiring first data of the sensor and the pressure measuring device after the sensor moves each time; moving the sensor at least once along the other side of the transverse direction from the reference point, wherein the movement is 0.5cm each time, and acquiring second data of the sensor and the pressure measuring device after the sensor moves each time; finally, by judging the initial data, the first data and the second data, when the acquired data of the sensor is not obviously wrong and the value of the pressure measuring device is still in the preset pressure range, the position of the sensor is an optional position, so that the position range of the sensor on the inner side of the cap body along the transverse direction is obtained, namely the position range of the sensor on the inner side of the cap body is determined. And the determined position range is the position range in which the sensor can acquire the detection data, so that when the sensor is installed in the position range acquired by the method, the sensor can be ensured to perform detection work well, and the detection result of the sensor is ensured.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, 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 invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a flowchart of a method for determining a position of a sensor according to an embodiment of the present disclosure;
fig. 2 is a first perspective view of a head-mounted device according to an embodiment of the present disclosure;
fig. 3 is a second perspective view of a head-mounted device according to an embodiment of the present application;
FIG. 4 is an enlarged view of a portion of FIG. 2 at A;
FIG. 5 is an exploded view of a moving part fitting sensor of a headset according to one embodiment of the present application;
FIG. 6 is a perspective view of a sensor-engaging kinematic component and a mounting component of a headgear according to another embodiment of the present application;
FIG. 7 is a perspective view of the mount of the headgear shown in FIG. 6;
FIG. 8 is a perspective block diagram of a motion piece engagement sensor of the headgear shown in FIG. 6;
FIG. 9 is a partial view of a clevis fitting headgear of a headgear provided in accordance with yet another embodiment of the present application;
fig. 10 is an exploded view of the clevis fit sensor shown in fig. 9.
Wherein, in the figures, the respective reference numerals:
1-a cap body; 101-origin; 102-a second reference point; 2-a sensor; 3-a cap hoop; 301-a first runner; 4-a moving part; 41-a first slider; 42-a first gripper arm; 43-a detent; 44-a second slide; 5-a fixing piece; 501-a second chute; 502-a limit groove; 51-a stationary body; 52-a spacing arm; 53-limiting ribs; 6-a buffer member; 7-U-shaped button; 71-a body portion; 72-a second gripper arm; x 1-first transverse direction; x 2-second transverse direction; y-longitudinal direction.
Detailed Description
Reference will now be made in detail to embodiments of the present application, 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 drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.
In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, is not to be considered as limiting.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating 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 present application, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and can be communicated with each other inside the two components or in an interaction relationship of the two components; similarly, the communication may be direct or indirect via an intermediary. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
For explaining the technical scheme of the application, the following detailed description is made in conjunction with the specific drawings and the embodiments:
referring to fig. 1 to 3 together, the method for determining the position of the sensor 2 provided in the embodiment of the present application is mainly used for obtaining the position range for installing the sensor 2 on the inner side of the cap body 1 of the head-mounted device, wherein the position range of the sensor 2 on the inner side of the cap body 1 is obtained mainly for enabling the sensor 2 to better fit to the artery of the head of the human body during measurement when the sensor 2 is installed on the inner side of the cap body 1 and the cap body 1 is worn on the head of the human body, and obtaining the health condition of the human body by measuring the artery of the head of the human body, that is, ensuring that the sensor 2 can perform detection well and ensuring the detection result of the sensor 2.
The position determining method of the sensor 2 comprises the following steps:
s1, finding a reference point: determining a reference point at the inner side of the cap body 1, wherein the reference point is close to the brim of the cap body 1;
in particular, the reference point is longitudinally y close to the brim of the cap 1. The longitudinal direction y is a vertical direction after the cap body 1 is worn on the head of a human body, i.e., the vertical direction y is illustrated in fig. 3.
S2, component installation: a sensor 2 is arranged at a reference point, and a pressure measuring device is arranged on the cap body 1;
specifically, after the sensor 2 is installed at the reference point, the sensor 2 is located at the inner side of the cap body 1, and the sensor 2 is close to the brim of the cap body 1 along the longitudinal direction y. Firstly, the sensor 2 is arranged on the inner side of the cap body 1, so that after the cap body 1 is worn on the head of a human body, the sensor 2 can be attached to the head of the human body, and the sensor 2 can conveniently detect the head of the human body; secondly, sensor 2 is close to the brim of the cap body 1 along vertical y, and when the cap body 1 was worn on human head, sensor 2 was pressed close to the artery of human head more, was convenient for improve sensor 2's detection accuracy.
In a specific embodiment, the pressure measuring means includes an air bag and a pressure gauge, and when the pressure measuring means is provided at the inner side of the cap body 1 in the step S2, the step includes providing the air bag at the inner side of the cap body 1, and the pressure gauge is connected to the air bag and measures the pressure of the air bag. The air bag is arranged at the inner side of the cap body 1, after the cap body 1 is worn on the head of a human body, the air bag is attached to the head of the human body and is positioned between the head of the human body and the cap body 1, so that the pressure gauge can accurately measure the pressure between the head of the human body and the cap body 1. Wherein, in this embodiment, gasbag and sensor 2 set up in the inboard relative both sides of the cap body 1, promptly, when the cap body 1 was worn in human head, when the reference point was located the left side of human head, promptly sensor 2 was located the left side of human head, the right side of human head was located to the gasbag this moment, like this, can avoid gasbag and sensor 2 to lead to sensor 2 can't contact human head and influence the testing result of sensor 2 when being located same one side of human head, and the pressure gauge can also accurately measure the pressure between human head and the cap body 1.
Here, in the present embodiment, the sensor 2 is provided as at least one of a photoelectric sensor, a pressure sensor, a temperature sensor, a humidity sensor, and an electroencephalogram sensor. Wherein, when the cap body 1 was worn in human head, pressure sensor can measure human pulse to the realization is to the detection of human respiratory rate, rhythm of the heart, thereby acquires health status such as mental state, fatigue degree and breathing about the human body, and photoelectric sensor and brain electrical sensor can measure human rhythm of the heart with pressure sensor jointly, guarantee the result accuracy of data. The temperature sensor can detect the body temperature of a human body, and the humidity sensor can detect the humidity of the human body, including sweat and the like, so that the health condition of the human body is obtained. In addition, the sensor 2 may be configured as other types of sensors, which are not listed here.
S3, collecting initial data: the method comprises the following steps of wearing a cap body 1 on the head of a human body, adjusting the tightness degree of the cap body 1 to enable the pressure value of a pressure measuring device to be within a preset pressure range, and collecting initial data of a sensor 2 and the pressure measuring device;
the initial data obtained at this time are the measurement initial data of the sensor 2 at the reference point and the initial data of the pressure gauge, and the initial data of the pressure gauge is in the preset pressure range at this time.
Specifically, after the cap body 1 is worn on the head of a human body, the tightness degree of the cap body 1 is adjusted to enable the pressure value of the pressure gauge to be within a preset pressure range, firstly, the cap body 1 can be perfectly attached to the head of the human body, and the cap body 1 cannot excessively press the head of the human body to affect the wearing comfort degree of the cap body 1, or the cap body 1 cannot be loosened to ensure the wearing comfort degree of the cap body 1, so that the wearing comfort degree of the head of the human body is ensured; secondly, because the cap body 1 is perfectly attached to the head of the human body, the sensor 2 at the inner side of the cap body 1 can be perfectly attached to the head of the human body, and the problem that the sensor 2 cannot accurately detect the human body due to the fact that the attachment degree of the sensor 2 and the head of the human body is not enough is avoided. When the fit degree between the sensor 2 and the head of the human body is not enough, the sensor 2 cannot continuously acquire the health condition of the head of the human body, or cannot acquire measurement data at all, and then the detection result of the sensor 2 is affected. It should be noted here that, by adjusting the tightness degree of the cap body 1 and then collecting the initial data, the phenomenon that the sensor 2 cannot measure due to the individual difference of the human head can be avoided.
Optionally, in step S3 or in step S3, the method further includes sequentially wearing the cap body 1 with the sensor 2 and the airbag on different human heads, adjusting the tightness of the cap body 1 to ensure comfort of the cap body 1 on the human head, and sequentially recording pressure data of the pressure gauge, so as to obtain a preset pressure range.
S4, collecting first data: moving the sensor 2 at least once along one lateral side from a reference point, wherein the movement is 0.5cm each time, and acquiring first data of the sensor 2 and the pressure measuring device after the sensor 2 moves each time;
specifically, when the first data is acquired, in order to expand the measurement range, the number of times the sensor 2 moves from the reference point to one side in the lateral direction is at least three times, and each movement is 0.5cm, and after each movement of the sensor 2, the data of the sensor 2 and the pressure gauge are recorded to obtain the first data. Wherein, the transverse side is a first transverse direction x1 illustrated in fig. 3, that is, the direction when the position of the cap body 1 for fitting the forehead of the human body points to the position of the cap body 1 for fitting the back of the head of the human body.
S5, collecting second data: moving the sensor 2 at least once along the other side of the transverse direction from the reference point, wherein the movement is 0.5cm each time, and acquiring second data of the sensor 2 and the pressure measuring device after the sensor 2 moves each time;
specifically, when the second data is acquired, in order to expand the measurement range, the number of times the sensor 2 moves from the reference point along the other lateral side is at least three times, and each movement is 0.5cm, and after each movement of the sensor 2, the data of the sensor 2 and the pressure gauge are recorded to obtain the second data. The other lateral side is a second lateral direction x2 shown in fig. 3, that is, the direction in which the position of the cap body 1 for fitting to the back of the head of the human body points to the position of the cap body 1 for fitting to the forehead of the human body, and the first lateral direction x1 and the second lateral direction x2 are both lateral directions perpendicular to the longitudinal direction y, and the first lateral direction x1 and the second lateral direction x2 are opposite. Wherein, as shown in fig. 3, the first lateral direction x1 is the leftward direction of the orientation illustrated in fig. 3, and the second lateral direction x2 is the rightward direction of the orientation illustrated in fig. 3.
S6, repeating the steps of collecting initial data, collecting first data and collecting second data in sequence;
specifically, in this step, step S3, step S4, and step S5 are sequentially repeated, and the data acquired in step S3, step S4, and step S5 are sequentially collected, so that through integration of multiple sets of data, occurrence of accidental events can be avoided, objectivity of the data is ensured, and errors occurring in the detection result are reduced. Generally, in this step, the measuring personnel needs to be replaced, that is, the cap body 1 is worn on the heads of the human bodies with different sizes in sequence for measurement. In this step, the step of repeatedly acquiring the initial data, the first data and the second data may be performed one or more times, so as to reduce the error of the detection result.
S7, position determination: according to the initial data, the first data and the second data, a position range for mounting the sensor 2 on the inner side of the cap body 1 is obtained.
Specifically, in the present embodiment, when the sensor 2 is close to an artery of the head of a human body, the sensor 2 can continuously acquire measurement data, and at this time, it can be considered that the acquired data of the sensor 2 does not have an obvious error, and the position where the sensor 2 is located meets the requirement and is an optional position; when the sensor 2 is not well attached to the head of the human body or the sensor 2 is not close to the artery of the human body, the sensor 2 cannot acquire data for measuring the condition of the human body or cannot acquire measurement data continuously, that is, the sensor 2 cannot measure or the measurement signal is very weak, and the position of the sensor 2 does not meet the requirement at this time. Thus, through the initial data, the first data and the second data, it can be determined whether the position of the sensor 2 meets the requirement after the sensor 2 continuously moves along the transverse direction, that is, whether a plurality of positions of the inner side of the cap body 1 along the transverse direction meet the requirement, so that the position range of the sensor 2 on the inner side of the cap body 1 along the transverse direction can be obtained, that is, the position range of the sensor 2 on the inner side of the cap body 1 can be ensured. It should be noted here that when the sensor 2 is installed in the position range obtained by the position determining method of the sensor 2, and the cap body 1 is worn on the head of the human body, and the tightness degree of the cap body 1 is adjusted so that the pressure gauge is in the preset pressure range, the sensor 2 is close to the artery of the head of the human body, and the detection result of the health state of the human body can be continuously obtained.
In the embodiment of the application, firstly, a sensor 2 is installed on the inner side of a cap body 1, the sensor 2 is located at a reference point, a pressure measuring device for measuring the pressure between the head of a human body and the cap body 1 is further arranged on the cap body 1, after the cap body 1 is worn on the head of the human body, the tightness degree of the cap body 1 is adjusted, so that the pressure value of the pressure measuring device is in a preset pressure range, the wearing comfort level of the head of the human body and the detection result of the sensor 2 are ensured, and at the moment, initial data of the sensor 2 and the pressure measuring device are collected; then, moving the sensor 2 at least once along one lateral side from the reference point, wherein the movement is 0.5cm each time, and acquiring first data of the sensor 2 and the pressure measuring device after the sensor 2 moves each time; thirdly, moving the sensor 2 at least once along the other side of the transverse direction from the reference point, wherein the movement is 0.5cm each time, and acquiring second data of the sensor 2 and the pressure measuring device after the sensor 2 moves each time; finally, by judging the initial data, the first data and the second data, when the acquired data of the sensor 2 are not obviously wrong and the value of the pressure measuring device is still within the preset pressure range, the position of the sensor 2 is an optional position, so that the position range of the sensor 2 on the inner side of the cap body 1 along the transverse direction is obtained, namely, the satisfactory position range of the sensor 2 on the inner side of the cap body 1 is determined. And, the determined position range is the position range in which the sensor 2 can acquire the detection data, so when the sensor 2 is installed in the position range acquired by the above method, the sensor 2 can be ensured to perform the detection work well, and the detection result of the sensor 2 can be ensured.
In the present embodiment, the predetermined pressure range is 5 to 20 millimeters of mercury (mmHg), i.e., the predetermined pressure range is 666.4Pa to 26656.6 Pa. It should be noted here that the obtaining of the preset pressure range may be performed in step S3, or before step S3, and includes: the cap body 1 with the sensor 2 and the airbag installed is sequentially worn on different human heads, the tightness degree of the cap body 1 is adjusted, the comfort degree of the cap body 1 worn on the human heads is guaranteed, pressure data of the pressure gauge are recorded in sequence, and therefore the preset pressure range is obtained. The preset pressure range is 5-20 mmHg, so that the sensor 2 can be ensured to be perfectly attached to the head of a human body at the moment, and the wearing comfort level of the head of the human body is ensured; secondly, because the cap body 1 is perfectly attached to the head of the human body, the sensor 2 at the inner side of the cap body 1 can be perfectly attached to the head of the human body, the problem that the sensor 2 cannot accurately detect due to the fact that the attachment degree of the sensor 2 and the head of the human body is not enough is avoided, and the detection result of the sensor 2 is guaranteed.
In this embodiment, in step S2 of mounting components, the method further includes providing a wireless communication module on the cap 1, electrically connecting the wireless communication module to the sensor 2, and wirelessly connecting the wireless communication module to an external terminal or a server. In the step S3 of collecting the initial data, the step S4 of collecting the first data, the step S5 of collecting the second data, and the step S6, the data of the sensor 2 are wirelessly acquired by the external terminal through the wireless communication module. Thus, when the data of the sensor 2 is collected, the external terminal collects the initial data, the first data and the second data measured by the sensor 2 through the wireless communication module, and when the external terminal can collect the data of the sensor 2 and has stronger signal intensity, that is, the sensor 2 can accurately and continuously obtain the measured data, the position of the sensor 2 is in a position range meeting the requirement at the moment and is an optional position; when the external terminal cannot acquire the data acquired by the sensor 2 or the signal intensity is weak, that is, the sensor 2 cannot acquire the measurement data or cannot acquire the measurement data continuously, it can be considered that the sensor 2 cannot acquire the health condition of the head of the human body continuously, and the position of the sensor 2 is not within the position range meeting the requirement. Here, it should be noted that the external terminal directly acquires data of the sensor 2, thereby improving convenience of acquiring data of the sensor 2 and reducing the cost of determining the position of the sensor 2.
It should be noted here that, when data of the sensor 2 is collected, the problem of wireless signals of the wireless communication module needs to be considered, and if the position of the wireless communication module is not right at this time, the external terminal still cannot accurately and continuously acquire the measurement data of the sensor 2 at this time. The wireless communication module is arranged beside the sensor 2, and in the measuring steps S3, S4, S5 and S6, the wireless communication module and the sensor 2 move simultaneously, if the external terminal can accurately and continuously acquire the data acquired by the sensor 2 and the signal is strong, the positions of the wireless communication module and the sensor 2 are selectable positions and are within the position range meeting the requirements. In this embodiment, the wireless communication module may be configured as a bluetooth module, a wifi module, or a SIM card, which is not limited herein.
In this embodiment, the wireless communication module may be further electrically connected to the pressure gauge, so that the external terminal may further obtain a pressure value measured by the pressure gauge through the wireless communication module, so that, in the measurement process, the external terminal may obtain the initial data, the first data and the second data of the sensor 2 and the pressure gauge through the wireless communication module, thereby improving convenience of the position determination method of the sensor 2.
In the present embodiment, in the step S3 of acquiring the initial data, the step S4 of acquiring the first data, the step S5 of acquiring the second data, and the step S6, the data acquisition time of the sensor 2 and the pressure measurement device is 5S to 30S, that is, the data acquisition time of the sensor 2 is 5S to 30S. Therefore, the data of the sensor 2 can be continuously acquired, and whether the sensor 2 can continuously measure the head of the human body can be judged through the continuously acquired data, so that whether the sensor 2 is positioned at the artery of the head of the human body is judged, and whether the position where the sensor 2 is positioned meets the requirement is ensured. Therefore, the setting of the data acquisition duration of the sensor 2 can ensure the accuracy of the acquired data of the sensor 2, avoid the occurrence of accidental events, ensure the objectivity of the data, and reduce the error of the detection result, thereby ensuring the accuracy and the objectivity of the finally determined position range of the sensor 2 which meets the requirements.
Referring to fig. 2 and 3, in the step S1 of finding the reference point, according to the distribution diagram of the artery on the head of the human body and the inner dimension range of the safety helmet specified by the country: 51cm to 64cm, and the position of the reference point is acquired so that the reference point is set near the artery of the head of the human body, and the reference point is also located near the temple of the head of the human body at this time.
The following are positions in two cases of the reference point in step S1, and are described by the first embodiment and the second embodiment, respectively:
the first embodiment:
in this embodiment, the reference point is a first reference point, the inner side of the cap body 1 has an origin 101, the origin 101 is located at a position on the inner side of the cap body 1 for fitting to the forehead of the human body, and a curve distance range between the first reference point and the origin 101 along a horizontal direction is as follows: 14cm to 16cm, that is, the first reference point is located at the position after the origin 101 is moved by 14cm to 16cm in the lateral direction, and at this time, the first reference point is located near the artery of the head of the human body, so that the position range of the sensor 2 is more conveniently acquired after the steps S3, S4, S5 and S6. In this way, after the built-in determination of the sensor 2 is completed, according to the acquired position range of the sensor 2, when the sensor 2 is installed in the position range that meets the requirement, the curve distance range between the center point of the sensor 2 and the origin 101 is: 12.5 cm-17.5 cm. When the first reference point is set to be 14cm away from the origin 101 in the transverse direction, the sensor 2 sequentially moves three times from the first reference point along the first transverse direction x1 and the second transverse direction x2, and the obtained position range is as follows, and the distance range between the center point of the sensor 2 and the curve of the origin 101 in the transverse direction is: 12.5 cm-15.5 cm; when the first reference point is set to be 16cm away from the origin 101 in the transverse direction, after the sensor 2 moves from the first reference point in the first transverse direction x1 and the second transverse direction x2 and is measured, the obtained satisfactory position range is as follows, and the distance range between the center point of the sensor 2 and the curve of the origin 101 in the transverse direction is: 14.5 cm-17.5 cm.
It should be noted here that the first reference point is located on the inner side of the cap body 1 along the first transverse direction x1 at a distance of 14cm to 16cm from the origin 10114cm, or the first reference point is located on the inner side of the cap body 1 along the second transverse direction x2 at a distance of 14cm to 16cm from the origin 10114 cm. In this way, when the sensor 2 is installed in the desired position range inside the cap 1, the sensor 2 can be located on the left side or the right side of the human head.
In a specific embodiment, a position 15cm away from the origin 101 along the transverse direction is selected as the first reference point, the positions obtained by moving the sensor 2 from the first reference point three times along the first transverse direction x1 are all optional positions meeting the requirement, and the positions obtained by moving the sensor 2 from the first reference point three times along the second transverse direction x2 are all optional positions meeting the requirement, so that, according to the obtained position range of the sensor 2, when the sensor 2 is installed in the position range meeting the requirement, the curve distance range between the center point of the sensor 2 and the origin 101 is: 13.5cm to 16.5cm, and the sensor 2 is closer to the artery of the head of the human body, so that the detection result of the sensor 2 can be ensured. The curve distance between the center point of the sensor 2 and the origin 101 along the transverse direction may be 13.5cm, 14cm, 14.5cm, 15cm, 15.5cm, 16cm or 16.5cm or other data.
Second embodiment:
in this embodiment, the reference point is a second reference point 102, the second reference point 102 is disposed at a position where the cap 1 faces the ear root of the human body along the longitudinal direction y, and the second reference point 102 is located near the artery of the head of the human body, so that the position range of the sensor 2 can be more conveniently obtained after steps S3, S4, S5 and S6. In this way, after the built-in determination of the sensor 2 is completed, according to the acquired position range of the sensor 2, when the sensor 2 is installed in the position range that meets the requirement, the curve distance range between the center point of the sensor 2 and the second reference point 102 is: 0-5 cm, that is, the obtained position range of the sensor 2 is: the position range between the position after moving 5cm from the second reference point 102 to the direction of the origin 101 and the second reference point 102, and the position range between the position after moving 5cm from the second reference point 102 to the direction of the position of the cap body 1 for fitting the back head of the human head and the second reference point 102, at this time, according to the obtained position range of the sensor 2, when the sensor 2 is installed in the position range meeting the requirement, the sensor 2 is located between the origin 101 and the second reference point 102 or between the position of the back head of the human head fitting the inner side of the cap body 1 and the second reference point 102.
In a specific embodiment, according to the acquired position range of the sensor 2, the position range of the sensor 2 is located between the origin 101 and the second reference point 102, when the sensor 2 is installed in the position range meeting the requirement, the sensor 2 is located between the origin 101 and the second reference point 102, and the curve distance between the center point of the sensor 2 and the second reference point 102 along the transverse direction is in the range of 0.5cm to 3cm, at this time, the sensor 2 is closer to the artery of the human body, so that the detection result of the sensor 2 can be ensured. Wherein the curvilinear distance of the center point of the sensor 2 and the second reference point 102 in the lateral direction may be 0.5cm, 1cm, 2cm or 3cm or other data.
The third embodiment:
referring to fig. 2 and fig. 3, the embodiment further provides a head-mounted device, which includes a cap body 1 and a sensor 2, wherein the cap body 1 can be worn on the head of a human body, and the sensor 2 is disposed inside the cap body 1 and is disposed along a longitudinal direction y near a brim of the cap body 1. The distance range of the central point of the sensor 2 and the curve of the origin 101 along the transverse direction is 12.5 cm-17.5 cm, the position range of the sensor 2 is ensured, so that the sensor 2 is close to the artery of the head of a human body, the detection work of the sensor 2 on the health condition of the human body can be ensured perfectly, and the detection result is ensured. The position range of the sensor 2 mounted inside the cap 1 is obtained by the position determining method of the sensor 2 in the first embodiment.
In the embodiment of the application, the distance range of the curve between the center point of the sensor 2 and the origin 101 along the transverse direction is 12.5 cm-17.5 cm, so that the position of the sensor 2 is located near the artery of the head of the human body, the position of the sensor 2 on the inner side of the cap body 1 is ensured, the health condition of the human body can be conveniently measured by the sensor 2 through the artery of the head of the human body, and the accuracy of the detection result of the sensor 2 is improved. In addition, the sensor 2 is arranged on the inner side of the cap body 1 and is close to the brim of the cap body 1, so that when the cap body 1 is worn on the head of a human body, the sensor 2 can be better attached to the head of the human body, the sensor 2 can conveniently detect the head of the human body, and the measurement accuracy of the sensor 2 on the health condition of the human body is improved.
In a specific embodiment, the distance between the center point of the sensor 2 and the origin 101 along the transverse curve ranges from 13.5cm to 16.5cm, so that the sensor 2 is closer to the artery of the head of the human body, the sensor 2 can be ensured to perfectly detect the health condition of the human body, and the detection result is ensured. The curve distance between the center point of the sensor 2 and the origin 101 along the transverse direction may be 13.5cm, 14cm, 14.5cm, 15cm, 15.5cm, 16cm or 16.5cm or other data.
In this embodiment, the sensor 2 may be at least one of a photoelectric sensor, a pressure sensor, a temperature sensor, a humidity sensor, an electroencephalogram sensor, a magnetic field sensor, and a radiation sensor. Wherein, when the cap body 1 was worn in human head, pressure sensor can measure human pulse to the realization is to the detection of human respiratory rate, rhythm of the heart, thereby acquires health status such as mental state, fatigue degree and breathing about the human body, and photoelectric sensor and brain electrical sensor can measure human rhythm of the heart with pressure sensor jointly, guarantee the result accuracy of data. The temperature sensor can detect the body temperature of a human body, and the humidity sensor can detect the humidity of the human body, including sweat and the like, so that the health condition of the human body is obtained. The magnetic field sensor is used for detecting the magnetic field around the cap body 1, and the radiation sensor is used for detecting the radiation condition around the cap body 1. In addition, the sensors 2 may also be configured as other types of sensors, which are not listed here, and the number of the sensors 2 in this embodiment is also not limited uniquely, and may be configured as one or at least two.
Referring to fig. 2 to 4, in the present embodiment, a ring-shaped cap band 3 is disposed at the inner side of the cap body 1, and the cap band 3 is close to the brim of the cap body 1 and is configured to be circumferentially sleeved on the head of a human body. The first reference point and the origin 101 are both arranged on the inner side of the cap hoop 3 and are arranged close to the brim of the cap body 1 along the longitudinal yy, and the sensor 2 is arranged on the inner side of the cap hoop 3 and is close to the brim of the cap body 1. Therefore, when the cap body 1 is worn on the head of a human body, the cap hoop 3 on the inner side of the cap body 1 is circumferentially sleeved on the periphery of the head of the human body, and firstly, the cap hoop 3 is attached to the periphery of the head of the human body, so that the cap body 1 can be stably worn on the head of the human body; secondly, the sensor 2 is arranged at the inner side of the cap hoop 3, and the cap hoop 3 is attached to the periphery of the head of the human body, so that the sensor 2 can be ensured to be attached to the head of the human body, and the detection work of the sensor 2 is ensured; thirdly, since the sensor 2 is provided inside the cap band 3, the position of the sensor 2 in the longitudinal direction y can be substantially secured, so that the sensor 2 can perform a detection work well.
In one embodiment, referring to fig. 4 and 5, in this embodiment, the moving member 4 is slidably disposed on the hat band 3, and the sensor 2 is disposed on the moving member 4. Therefore, when the position of the sensor 2 needs to be adjusted, the moving part 4 slides on the hat hoop 3 along the transverse direction, so that the position of the sensor 2 along the transverse direction is adjusted, the flexibility of the adjustment of the transverse position of the sensor 2 is improved, and the position of the sensor 2 and the detection result of the sensor 2 are ensured.
Referring to fig. 5, in the present embodiment, a buffer 6 is tightly pressed between the sensor 2 and the moving element 4. The buffer member 6 is arranged, so that when the sensor 2 is attached to the head of a human body, the buffer member 6 provides a proper buffer effect, the phenomenon that the sensor 2 is damaged or the sensor 2 is damaged due to the fact that the sensor 2 is in hard contact with the head of the human body is avoided, and the buffer member 6 is arranged to protect the head of the human body and the sensor 2. The buffer member 6 is made of foam, and may have other soft structures with buffer.
In one embodiment, referring to fig. 4 and fig. 5, the moving member 4 is clamped on the hat band 3, the hat band 3 is provided with a first sliding groove 301 extending along the transverse direction, the moving member 4 is provided with a first sliding block 41, and the first sliding block 41 is inserted into the first sliding groove 301 and can slide along the first sliding groove 301. It should be noted that, when the moving member 4 is clamped on the hat band 3, the first sliding block 41 of the moving member 4 is inserted into the first sliding groove 301 and is limited in the first sliding groove 301, so that the first sliding block 41 can be slidably disposed in the first sliding groove 301 along the transverse direction, the sliding direction of the moving member 4 is ensured, and the sensor 2 is ensured to move only along the transverse direction; in addition, the first sliding block 41 is slidably disposed in the first sliding groove 301 along the transverse direction, so as to realize the position movement of the sensor 2 along the transverse direction, and improve the flexibility and stability of the movement of the sensor 2 along the transverse direction.
In a specific embodiment, the distances between the two ends of the first sliding groove 301 in the transverse direction and the origin 101 are 12.5cm and 17.5cm, respectively, so that the central point of the sensor 2 can slide in the preset position range of the cap hoop 3, thereby realizing the stroke limitation of the sensor 2, and ensuring the detection result of the sensor 2 after the sensor 2 completes the movement.
In the specific embodiment, the moving element 4 includes two first holding arms 42 spaced apart from each other, and the first sliding blocks 41 are disposed on opposite sides of the two first holding arms 42. The two first clamping arms 42 are respectively clamped at two sides of the hat band 3, and the first sliding blocks 41 on the two first clamping arms 42 are inserted into the first sliding grooves 301, so that the moving member 4 is clamped on the hat band 3, and the moving member 4 can also move transversely relative to the hat band 3. The number of the first sliding blocks 41 and the number of the first sliding blocks 41 are correspondingly set, so that the plurality of first sliding blocks 41 are inserted into the plurality of first sliding grooves 301 in a one-to-one correspondence manner, and the stability of the movement member 4 sliding relative to the hat band 3 is improved. The sensor 2 is disposed on one of the first clamping arms 42, and the buffer member 6 is abutted between the one of the first clamping arms 42 and the sensor 2.
In another embodiment, referring to fig. 6 to 8, the fixing member 5 is provided on the hat band 3, and the moving member 4 is slidably provided on the fixing member 5 in the transverse direction. Be equipped with a plurality of spacing muscle 53 along horizontal interval arrangement on the mounting 5, be equipped with screens piece 43 on the motion 4, screens piece 43 can be along lateral shifting with the joint in turn between two adjacent spacing muscle 53. It should be noted here that, two adjacent limiting ribs 53 form a limiting groove 502 at an interval, when the moving element 4 is laterally slidably disposed in the fixing element 5, the blocking element 43 on the moving element 4 is alternately blocked in the limiting groove 502 formed by two adjacent limiting ribs 53, so as to limit the moving element 4 in each lateral sliding, that is, to limit the sliding stroke of the moving element 4, and to ensure the limiting of the moving element 4 after each sliding, that is, to ensure the limiting of the sensor 2 after each moving, thereby improving the position determination of the sensor 2 after each moving.
In a specific embodiment, the fixing member 5 includes a fixing body 51 and two limiting arms 52 disposed on the fixing body 51, the fixing body 51 is fixed on the cap band 3, a second sliding slot 501 is formed between each of the two limiting arms 52 and the fixing body 51, and the limiting rib 53 is disposed on the fixing body 51. The screens 43 and the sensor 2 are respectively disposed on two opposite sides of the moving element 4, and the other opposite sides of the moving element 4 are respectively provided with the second sliding blocks 44, the two second sliding blocks 44 are respectively inserted into the two second sliding grooves 501, and are limited in the two second sliding grooves 501, so that the second sliding blocks 44 can slide in the second sliding grooves 501 only along the transverse direction, thereby ensuring that the moving element 4 can move along the transverse direction, that is, ensuring the moving direction of the sensor 2, and ensuring the position of the sensor 2.
In a specific embodiment, a buffer member 6 is tightly abutted between the sensor 2 and the moving member 4 for protecting the head of the human body and the sensor 2.
In another embodiment, referring to fig. 9 and 10, the head-mounted device further includes a U-shaped buckle 7, the sensor 2 is disposed on the U-shaped buckle 7, and the U-shaped buckle 7 is detachably fastened to the hat band 3. It should be noted here that, in use, after the position is determined according to the position determination method of the sensor 2, the U-shaped clasp 7 is directly clasped to the hat band 3, thereby realizing the installation of the sensor 2.
In a specific embodiment, the U-shaped buckle 7 comprises a body portion 71 and two second clamping arms 72 arranged on the body portion 71, the two second clamping arms 72 are arranged at intervals, and the sensor 2 is arranged on one of the second clamping arms 72. When the sensor 2 is to be mounted to the cap band 3, the two second clamping arms 72 are respectively clamped to opposite sides of the cap band 3, so that the entire U-shaped clasp 7 is fastened to the cap band 3.
In a specific embodiment, a buffer 6 is tightly abutted between the sensor 2 and one of the second clamping arms 72 for protecting the head of the human body and the sensor 2.
The fourth embodiment:
referring to fig. 2 and fig. 3, a head-mounted device is further provided in the present embodiment, which is different from the third embodiment in that: the position range of the sensor 2 installed inside the cap body 1 in the present embodiment is obtained by the position determination method of the sensor 2 in the second embodiment, and the reference point is the second reference point 102.
In a particular embodiment, the curvilinear distance of the center point of the sensor 2 from the second reference point 102 in the transverse direction ranges from 0.5cm to 3 cm. Through adopting above-mentioned technical scheme to make sensor 2 be close to the artery of human head more, ensure that sensor 2 can be intact to the detection achievement of human health condition, guarantee the testing result. Wherein the curvilinear distance of the center point of the sensor 2 and the second reference point 102 in the lateral direction may be 0.5cm, 1cm, 2cm or 3cm or other data.
The rest of this embodiment is the same as the third embodiment, and the features that are not explained in this embodiment are explained by the third embodiment, which is not described again here.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A method of determining the position of a sensor, comprising the steps of:
finding a reference point: determining a reference point at an inner side of a cap body, the reference point being proximate to a brim of the cap body;
component installation: installing a sensor at the reference point, and arranging a pressure measuring device on the cap body;
acquiring initial data: the cap body is worn on the head of a human body, the tightness degree of the cap body is adjusted, so that the pressure value of the pressure measuring device is in a preset pressure range, and initial data of the sensor and the pressure measuring device are collected;
collecting first data: moving the sensor from the reference point at least once along one lateral side, each time by 0.5cm, and acquiring first data of the sensor and the pressure measurement device after each movement of the sensor;
collecting second data: moving the sensor from the reference point along the other lateral side at least once, each time by 0.5cm, and acquiring second data of the sensor and the pressure measurement device after each movement of the sensor;
repeating the steps of collecting the initial data, collecting the first data and collecting the second data in sequence;
and (3) position determination: and acquiring a position range of the inner side of the cap body for mounting the sensor according to the initial data, the first data and the second data.
2. The method of determining the position of a sensor according to claim 1, wherein the predetermined pressure is in a range of 5 to 20 mmhg.
3. The method of determining the position of a sensor according to claim 1, wherein in the step of mounting the component, a wireless communication module is provided on the cap body, the wireless communication module is electrically connected to the sensor, and the wireless communication module is wirelessly connected to an external terminal;
in the step of collecting the initial data, the step of collecting the first data and the step of collecting the second data, the data of the sensor are obtained by the external terminal through the wireless communication module in a wireless mode.
4. The method for determining the position of a sensor according to any one of claims 1 to 3, wherein the reference point is a first reference point, the position of the inner side of the cap body for fitting the forehead of the human body is an origin, and a curve distance range of the first reference point and the origin along a transverse direction is as follows: 14 cm-16 cm.
5. The method of determining the position of a sensor according to any one of claims 1 to 3, wherein the reference point is a second reference point, and the second reference point is provided at a position where the cap body is opposed to the human ear root in the longitudinal direction.
6. The head-mounted equipment is characterized by comprising a cap body capable of being worn on the head of a human body and a sensor arranged on the inner side of the cap body, wherein the sensor is arranged close to the brim of the cap body; the distance range of the center point of the sensor and the curve of the origin point along the transverse direction is 12.5cm to 17.5cm, and the position range of the sensor installed on the inner side of the cap body is obtained by the position determination method of the sensor according to claim 4.
7. The headgear of claim 6, wherein the inner side of the cap body is provided with a ring-shaped hat band, the hat band is close to the brim of the cap body and is arranged to be circumferentially sleeved on the head of the human body; the first reference point is arranged on the inner side of the hat hoop, and the sensor is arranged on the hat hoop.
8. The headgear of claim 7, wherein the headband has a moving member slidably disposed thereon, and the sensor is disposed on the moving member.
9. The headgear of claim 7, further comprising a clevis, wherein the sensor is disposed on the clevis, and wherein the clevis is removably attached to the headgear.
10. The head-mounted equipment is characterized by comprising a cap body capable of being worn on the head of a human body and a sensor arranged on the inner side of the cap body, wherein the sensor is arranged close to the brim of the cap body; the position range of the sensor mounted on the inner side of the cap body is obtained by the position determination method of the sensor according to claim 5, and the distance between the center point of the sensor and the second reference point along the curve in the transverse direction is in the range of 0.5cm to 3 cm.
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