WO2015027358A1 - Device for judging whether person is advancing or drowned - Google Patents
Device for judging whether person is advancing or drowned Download PDFInfo
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- WO2015027358A1 WO2015027358A1 PCT/CN2013/001028 CN2013001028W WO2015027358A1 WO 2015027358 A1 WO2015027358 A1 WO 2015027358A1 CN 2013001028 W CN2013001028 W CN 2013001028W WO 2015027358 A1 WO2015027358 A1 WO 2015027358A1
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- gravitational acceleration
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- local static
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- accelerometer
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/08—Alarms for ensuring the safety of persons responsive to the presence of persons in a body of water, e.g. a swimming pool; responsive to an abnormal condition of a body of water
- G08B21/088—Alarms for ensuring the safety of persons responsive to the presence of persons in a body of water, e.g. a swimming pool; responsive to an abnormal condition of a body of water by monitoring a device worn by the person, e.g. a bracelet attached to the swimmer
Definitions
- the present invention relates to a judging device, and more particularly to a device for calculating whether or not a suspected drowning is suspected. Background technique
- inertial navigation When a person is swimming, a drowning event occurs. If a distress signal is sent to the outside world, it increases the chance of survival. How to judge whether to drown in the water, whether to use the advancement as a basis for judging, to judge whether there is a forward speed, generally only use inertial navigation, inertial navigation applied to aviation, is a use of such as gyro, magnetic north characteristics and accelerometer integral calculation In other ways, the position, direction and attitude of the aircraft are obtained for the pilot to fly and navigate. That is, the inertial reference system utilizes the stability characteristics of the gyro rotation axis to detect the change of azimuth and attitude; 2.
- the magnetic north compass takes the characteristics of the earth magnetic north and the compass to detect the current orientation or heading of the aircraft; 3. Accelerometer When the aircraft is parked, the longitude and latitude data of the aircraft are input, and the three-dimensional acceleration measured by the accelerometer is used when the aircraft moves, and the heading, the speed and the displacement are calculated by computer calculation. However, the inertial navigation error will accumulate over time and cannot be used for a long time. If it is applied to drowning for help, it must be improved. Summary of the invention
- the main object of the present invention is to provide a device for judging whether to advance or drown, and whether the person in the water has a forward motion as a basis for judging whether or not the water is drowning, and further issuing a distress signal, and accurately controlling the optimal rescue opportunity. , improve the chances of survival.
- the present invention provides a device for judging whether to advance or drown, and the device comprises a judging device, and an accelerometer, an arithmetic unit and an alarm component provided on the judging device, the accelerometer X
- the ⁇ , ⁇ , ⁇ three axes can sense the dynamic gravitational acceleration, and the local static gravitational acceleration in the area.
- the arithmetic unit can calculate the sum of the squares of the dynamic gravitational acceleration values of the three axes of the accelerometer and the square of the local static gravitational acceleration.
- the square sum of the three-axis output value of the accelerometer is greater than a value above the square of the local static gravitational acceleration, or a value change smaller than the square of the local static gravitational acceleration, as a judgment of whether the person in the water is in a critical state. in accordance with. It is also the sum of the squares of the three-axis sensing of the accelerometer, ⁇ 2+ ⁇ 2+ ⁇ 2, if the sum of squares is greater than the square of the local static gravitational acceleration over a period of time, or less than the square of the local static gravitational acceleration, And if this time has a preset ratio or more, it is not There is a forward speed or a suspected drowning.
- the present invention is capable of emitting an acousto-optic or electronic signal through the alarm element in a critical state. In this way, you can accurately control the best time for help and improve your chances of survival.
- FIG. 1 is a schematic diagram of a composition structure of the present invention.
- FIG. 2 is a flow chart of determining whether or not water is drowning according to the present invention.
- the present invention is a device for judging whether to advance or drown, and the device comprises a judging device 1 that can be disposed on a human body, and an accelerometer 2 disposed on the judging device 1. 0, the arithmetic unit 3 0, and the alarm element 40 and other components, wherein:
- the accelerometer 20 has three axes of X, Y, and ,, and can sense the dynamic gravitational acceleration of the X, ⁇ , and ⁇ axes, and the local static gravitational acceleration in the region, because the accelerometer 20 is a generally known object. , not to repeat.
- the arithmetic unit 30 is a general microprocessor and the like, and can receive the dynamic gravitational acceleration of the X, ⁇ , and ⁇ axes measured by the accelerometer 20, and the local static gravitational acceleration in the region, and then calculate the X. , the sum of the squares of the dynamic gravitational acceleration values of the three axes, and the square of the static gravitational acceleration; and further comparing the sum of the squared values of the dynamic gravitational acceleration values of the X, ⁇ , and ⁇ axes with the square of the local static gravitational acceleration The change in the size relationship is used as a basis for judging whether it is normal or abnormal.
- the alarm component 40 is an element that emits an alarm message such as an acousto-optic or electronic signal as a message indicating that it is for help.
- the combination of the above components is utilized, if the square sum value of the output values of the accelerometers X, ⁇ , ⁇ is greater than a value of the square of the local static gravitational acceleration for a period of time, or less than the local static gravitational acceleration.
- the change in the square value is used as a basis for judging whether or not a person in the water in the swimming pool is in a critical state. If it is in a normal state, the monitoring is continued, and if it is in an abnormal state, the alarm element 40 issues an alarm signal.
- the numerical value of the present invention as a basis for judging may be the sum of the square roots.
- the accelerometer X, ⁇ , ⁇ three-axis transmission The sum of the squares of the values is less than the square of the local static gravitational acceleration, or it may be a value less than the square of the local static gravitational acceleration.
- the present invention proposes a new calculation method for judging whether or not water is trapped, because the vector is not affected by the rotation of the coordinate axis, and the acceleration is also a vector, the accelerometer 2 0 X
- the squared sum of the three-axis acceleration of Y, Z and the re-opening number are the combined accelerations of the accelerometer. If the force acts in the horizontal direction, the sum of the squares of X, ⁇ , and ⁇ is relatively small. If it acts on the vertical line, the sum of the squares of X, ⁇ , and ⁇ will be proportional to the horizontal line X, ⁇ , ⁇ The sum of the squares of the axes is much larger.
- the gravitational acceleration is 10M/S2
- the vertical line is added with an acceleration of 0.1 M/S2 upwards
- the sum of the three axes is 102.01
- the horizontal acceleration is 1 M/S2
- the X, Y, and ⁇ are three-axis squared. And also only 101. Since the vector is not affected by the rotation of the coordinate axes, the sum of the squares of the X, ⁇ , and ⁇ axes can be added to calculate the original acceleration.
- the acceleration of horizontal advancement during swimming 1 M/S2 is rare and the time is short, but 0.1 M/S2 is easily achieved.
- X, ⁇ , ⁇ are the three axes of the accelerometer, so if swimming, the value of ⁇ 2+ ⁇ 2+ ⁇ 2 is greater than a preset number or less than the time of the local static gravitational acceleration squared for a certain period of time. , there is no forward speed or suspected drowning. For those who are good at swimming, the power is used for advancement. The upper and lower parts are used for ventilation. If there is no ventilation, the force is used up and down. It is a dangerous signal. If the force is used up or down, the longer the time, the longer it must be changed. Gas, if there is no ventilation, the more the frequency or time when the data is greater than a certain value or less than the square of the local static gravitational acceleration, the higher the dangerous component.
- the device Because the device must be worn on the body, the volume should not be too large, so the program must be streamlined and effective. This method can simplify the calculation and reduce the battery and volume of the wearer. Because it is considered that the accelerometer will have an offset value, that is, there will be a correction value at the factory and a slight vibration of the human body, so the squared sum of the local static gravitational acceleration is listed as the warning signal is changed to be less than the square sum of the local static gravitational acceleration. The value is listed as a warning signal. For example, the warning value is greater than 118% of the sum of the squares of the local static gravitational acceleration, or 95% of the sum of the squares of the local gravitational accelerations. For example, if the local static gravity acceleration is 10M/S2, then it is greater than 118M2/S4 and less than 95 M2/S4 is the warning value.
Abstract
A device for judging whether a person is advancing or drowned having an accelerometer, a computing unit and an alarm device provided thereon. Dynamic gravity acceleration and local static gravity acceleration are tri-axially sensed in the X, Υ, Ζ directions of the accelerometer, then the sum of the squares of the tri-axial dynamic gravity acceleration, and the square of local static gravity acceleration are calculated through the computing unit. Based on this when users is in the water, if in a period of time, the sum of the squares the output value of tri-axial acceleration is larger than the a value above the square of local static gravity acceleration, or less than the value of any change in the square of local static gravity acceleration, a judge that the swimming person is in a critical condition is made, and the alarm device is adopted for emitting alerting sound/light, or electronic signals in emergency.
Description
判断是否前进或溺水的装置 技术领域 Device for judging whether to advance or drowning
本发明涉及一种判断装置， 特别是指用于计算判断是否疑似溺水的装置。 背景技术 The present invention relates to a judging device, and more particularly to a device for calculating whether or not a suspected drowning is suspected. Background technique
人在游泳时发生溺水事件， 若能发出求救信号让外界知道， 则能增加存活 的机率。 而如何判断是否在水中溺水， 可利用是否前进作为判断依据， 要判断 是否有前进速度， 一般只能用惯性导航， 惯性导航应用于航空， 是一种利用如 陀螺、 磁北特性及加速计积分计算等方式， 求得飞机的位置、 方向及姿态等资 料以供飞行员飞行及航行的依据。 亦即 1、 惯性参考系统一利用陀螺转动轴稳定 的特性， 测知方位与姿态的变化； 2、 磁北罗盘一以地球磁北及罗盘的特性， 测 知目前飞机的朝向或航向； 3、 加速计一在飞机停放时输入飞机当时的经度与纬 度数据， 在飞机移动时利用加速计测得的三维加速度， 经由电脑计算换算出航 向、 航速与位移。 但是惯性导航误差会随时间累积， 无法长时间使用， 若应用 于溺水求救， 则须加以改进。 发明内容 When a person is swimming, a drowning event occurs. If a distress signal is sent to the outside world, it increases the chance of survival. How to judge whether to drown in the water, whether to use the advancement as a basis for judging, to judge whether there is a forward speed, generally only use inertial navigation, inertial navigation applied to aviation, is a use of such as gyro, magnetic north characteristics and accelerometer integral calculation In other ways, the position, direction and attitude of the aircraft are obtained for the pilot to fly and navigate. That is, the inertial reference system utilizes the stability characteristics of the gyro rotation axis to detect the change of azimuth and attitude; 2. The magnetic north compass takes the characteristics of the earth magnetic north and the compass to detect the current orientation or heading of the aircraft; 3. Accelerometer When the aircraft is parked, the longitude and latitude data of the aircraft are input, and the three-dimensional acceleration measured by the accelerometer is used when the aircraft moves, and the heading, the speed and the displacement are calculated by computer calculation. However, the inertial navigation error will accumulate over time and cannot be used for a long time. If it is applied to drowning for help, it must be improved. Summary of the invention
本发明的主要目的， 是提供一种判断是否前进或是溺水的装置， 利用水中 的人是否有前进动作来作为判断是否溺水的依据， 再进一步发出求救信号， 而 能准确掌控最佳的求救时机， 提升存活机率。 The main object of the present invention is to provide a device for judging whether to advance or drown, and whether the person in the water has a forward motion as a basis for judging whether or not the water is drowning, and further issuing a distress signal, and accurately controlling the optimal rescue opportunity. , improve the chances of survival.
为达成上述的创作目的， 本发明提出一种判断是否前进或是溺水的装置， 其构成包含一判断装置， 以及设于该判断装置上的加速度计、 运算单元与警报 元件， 该加速度计具 X、 Υ、 Ζ三轴， 能感测动态重力加速度， 以及所在地区的 当地静止重力加速度， 该运算单元能计算出该加速度计三轴的动态重力加速度 数值的平方和， 以及当地静止重力加速度平方。 进而利用在一段时间内， 该加 速度计三轴输出数值的平方和大于该当地静止重力加速度平方以上的一个数 值， 或小于当地静止重力加速度平方的数值变化， 作为判断水中的人是否陷入 危急状态的依据。 亦即将加速度计三轴感测的数值平方和相加， Χ2+Υ2+Ζ2 , 若是一段时间内， 其平方和大于当地静止重力加速度平方以上的一数值， 或小 于当地静止重力加速度平方的数值， 而此一时间占有一预设比例以上， 则为没
有前进速度或是疑似溺水。 In order to achieve the above-mentioned creative purpose, the present invention provides a device for judging whether to advance or drown, and the device comprises a judging device, and an accelerometer, an arithmetic unit and an alarm component provided on the judging device, the accelerometer X The Υ, Ζ, Ζ three axes, can sense the dynamic gravitational acceleration, and the local static gravitational acceleration in the area. The arithmetic unit can calculate the sum of the squares of the dynamic gravitational acceleration values of the three axes of the accelerometer and the square of the local static gravitational acceleration. Further, in a period of time, the square sum of the three-axis output value of the accelerometer is greater than a value above the square of the local static gravitational acceleration, or a value change smaller than the square of the local static gravitational acceleration, as a judgment of whether the person in the water is in a critical state. in accordance with. It is also the sum of the squares of the three-axis sensing of the accelerometer, Χ2+Υ2+Ζ2, if the sum of squares is greater than the square of the local static gravitational acceleration over a period of time, or less than the square of the local static gravitational acceleration, And if this time has a preset ratio or more, it is not There is a forward speed or a suspected drowning.
与现有技术相比， 本发明能够在危急状态时， 通过该警报元件发出警示的 声光或电子信号。 藉此能准确掌控最佳的求救时机， 提升存活机率。 附图说明 Compared with the prior art, the present invention is capable of emitting an acousto-optic or electronic signal through the alarm element in a critical state. In this way, you can accurately control the best time for help and improve your chances of survival. DRAWINGS
图 1为本发明的组成架构示意图。 FIG. 1 is a schematic diagram of a composition structure of the present invention.
图 2为本发明判断是否溺水的流程图。 2 is a flow chart of determining whether or not water is drowning according to the present invention.
附图标记说明： 1-判断装置； 20-加速度计； 30-运算单元； 10-警报元件。 具体实施方式 DESCRIPTION OF REFERENCE NUMERALS: 1-judging device; 20-accelerometer; 30-arithmetic unit; 10-alarm element. detailed description
请参阅图 1、 图 2所示， 本发明是一种判断是否前进或是溺水的装置， 其构 成包含一可设置于人体身上的判断装置 1 , 以及设于该判断装置 1上的加速度 计 2 0、 运算单元 3 0， 以及警报元件 4 0等构件， 其中： Referring to FIG. 1 and FIG. 2, the present invention is a device for judging whether to advance or drown, and the device comprises a judging device 1 that can be disposed on a human body, and an accelerometer 2 disposed on the judging device 1. 0, the arithmetic unit 3 0, and the alarm element 40 and other components, wherein:
该加速度计 2 0具有 X、 Y、 Ζ三轴， 能感测 X、 Υ、 Ζ三轴的动态重力加 速度， 以及所在地区的当地静止重力加速度， 缘于该加速度计 2 0乃一般已知 物件， 不在赘述。 The accelerometer 20 has three axes of X, Y, and ,, and can sense the dynamic gravitational acceleration of the X, Υ, and Ζ axes, and the local static gravitational acceleration in the region, because the accelerometer 20 is a generally known object. , not to repeat.
该运算单元 3 0为一般微处理器等构件， 能接收该加速度计 2 0所测得的 X、 Υ、 Ζ三轴的动态重力加速度， 以及所在地区的当地静止重力加速度， 进而 计算出该 X、 Υ、 Ζ三轴的动态重力加速度数值的平方和数值， 以及静止重力加 速度平方； 并进一步比对 X、 Υ、 Ζ三轴的动态重力加速度数值的平方和数值与 当地静止重力加速度平方数值的大小关系的变化， 作为判断是否正常或异常状 态的依据。 The arithmetic unit 30 is a general microprocessor and the like, and can receive the dynamic gravitational acceleration of the X, Υ, and Ζ axes measured by the accelerometer 20, and the local static gravitational acceleration in the region, and then calculate the X. , the sum of the squares of the dynamic gravitational acceleration values of the three axes, and the square of the static gravitational acceleration; and further comparing the sum of the squared values of the dynamic gravitational acceleration values of the X, Υ, and Ζ axes with the square of the local static gravitational acceleration The change in the size relationship is used as a basis for judging whether it is normal or abnormal.
该警报元件 4 0系一可发出声光或电子信号等警报讯息的元件， 作为向外 表示求救的讯息。 The alarm component 40 is an element that emits an alarm message such as an acousto-optic or electronic signal as a message indicating that it is for help.
藉此， 承上述的构件组合， 利用在一段时间内， 若该加速度计 X、 Υ、 Ζ三 轴输出数值的平方和数值大于该当地静止重力加速度平方以上的一数值， 或小 于当地静止重力加速度平方的数值变化， 作为判断游泳时水中的人是否陷入危 急状态的依据， 若是正常状态则继续监控， 若是异常状态则该警报元件 4 0便 发出警报信号。 Thereby, the combination of the above components is utilized, if the square sum value of the output values of the accelerometers X, Υ, Ζ is greater than a value of the square of the local static gravitational acceleration for a period of time, or less than the local static gravitational acceleration The change in the square value is used as a basis for judging whether or not a person in the water in the swimming pool is in a critical state. If it is in a normal state, the monitoring is continued, and if it is in an abnormal state, the alarm element 40 issues an alarm signal.
再者， 本发明作为判断依据的数值， 亦即该加速度计 X、 Υ、 Ζ三轴输出数 值的平方和， 也可以是平方和的后再开根号。 或者该加速度计 X、 Υ、 ζ三轴输
出数值的平方和小于当地静止重力加速度平方， 也可以是小于当地静止重力加 速度平方以下的一数值。 Furthermore, the numerical value of the present invention as a basis for judging, that is, the sum of the squares of the three-axis output values of the accelerometers X, Υ, and , may be the sum of the square roots. Or the accelerometer X, Υ, ζ three-axis transmission The sum of the squares of the values is less than the square of the local static gravitational acceleration, or it may be a value less than the square of the local static gravitational acceleration.
以下再进一步说明本发明应用的详细理论， 本发明提出一个新的计算方式 用来判断是否溺水， 因为向量并不受到坐标轴旋转结果而受到影响， 而加速度 也是向量， 将该加速度计 2 0 X、 Y、 Z 三轴加速度的数值平方和再开根号， 就 是此加速度计受到的合加速度。 若是作用力作用在水平方向， 则 X、 Υ、 Ζ三轴 平方和比较小， 若是作用在垂直线上， 则 X、 Υ、 Ζ三轴平方和会比作用在水平 线上 X、 Υ、 Ζ三轴平方和大很多。 例如重力加速度为 10M/S2， 垂直线上加上 一个往上 0.1 M/S2的加速度， 则三轴平方和为 102.01，但是若是水平加速度为 1 M/S2 , 则 X、 Y、 Ζ三轴平方和也才 101。 因为向量并不受到坐标轴旋转结果而 受到影响， 所以可以将 X、 Υ、 Ζ三轴平方和相加， 推算出原本的加速度。 游泳 时水平前进的加速度 1 M/S2是很少见的， 而且时间也不久， 但是 0.1 M/S2却是 很容易达到。 X， Υ , Ζ 是加速度计的三轴， 所以若是游泳时， Χ2+Υ2+Ζ2 的 数值若是一段时间内， 大于一个预设数字或小于当地静止重力加速度平方的时 间占有某一预设比例以上， 则为没有前进速度或是疑似溺水。 善于游泳的人， 力量多用在前进， 上上下下是为了换气， 若无换气而力量用在上上下则是危险 信号， 力量若是用在上上下下比例或时间越久就必须浮出水面换气， 若是无换 气， 则此数据大于某一数值或小于当地静止重力加速度平方出现的频率或时间 越多， 则危险成分越高。 因为此装置必须带在身上， 体积不能太大， 所以程序 必须精简有效， 本方法可以将计算精简， 进而缩小配戴身上的电池与体积。 因 为考虑到加速度计会有偏移值， 即出厂时会有一个校正值， 与人体细微的震动， 所以将小于当地静止重力加速度平方和列为警戒信号改为小于当地静止重力加 速度平方和以下的数值， 列为警戒信号。 例如以大于当地静止重力加速度平方 和的 118% , 或是小于当地重力加速度平方和的 95%为警戒值。 又例如当地静止 重力加速度为 10M/S2 , 则大于 118M2/S4与小于 95 M2/S4为警戒值。 The detailed theory of the application of the present invention will be further described below. The present invention proposes a new calculation method for judging whether or not water is trapped, because the vector is not affected by the rotation of the coordinate axis, and the acceleration is also a vector, the accelerometer 2 0 X The squared sum of the three-axis acceleration of Y, Z and the re-opening number are the combined accelerations of the accelerometer. If the force acts in the horizontal direction, the sum of the squares of X, Υ, and Ζ is relatively small. If it acts on the vertical line, the sum of the squares of X, Υ, and 会 will be proportional to the horizontal line X, Υ, Ζ The sum of the squares of the axes is much larger. For example, the gravitational acceleration is 10M/S2, and the vertical line is added with an acceleration of 0.1 M/S2 upwards, then the sum of the three axes is 102.01, but if the horizontal acceleration is 1 M/S2, the X, Y, and Ζ are three-axis squared. And also only 101. Since the vector is not affected by the rotation of the coordinate axes, the sum of the squares of the X, Υ, and Ζ axes can be added to calculate the original acceleration. The acceleration of horizontal advancement during swimming 1 M/S2 is rare and the time is short, but 0.1 M/S2 is easily achieved. X, Υ, Ζ are the three axes of the accelerometer, so if swimming, the value of Χ2+Υ2+Ζ2 is greater than a preset number or less than the time of the local static gravitational acceleration squared for a certain period of time. , there is no forward speed or suspected drowning. For those who are good at swimming, the power is used for advancement. The upper and lower parts are used for ventilation. If there is no ventilation, the force is used up and down. It is a dangerous signal. If the force is used up or down, the longer the time, the longer it must be changed. Gas, if there is no ventilation, the more the frequency or time when the data is greater than a certain value or less than the square of the local static gravitational acceleration, the higher the dangerous component. Because the device must be worn on the body, the volume should not be too large, so the program must be streamlined and effective. This method can simplify the calculation and reduce the battery and volume of the wearer. Because it is considered that the accelerometer will have an offset value, that is, there will be a correction value at the factory and a slight vibration of the human body, so the squared sum of the local static gravitational acceleration is listed as the warning signal is changed to be less than the square sum of the local static gravitational acceleration. The value is listed as a warning signal. For example, the warning value is greater than 118% of the sum of the squares of the local static gravitational acceleration, or 95% of the sum of the squares of the local gravitational accelerations. For example, if the local static gravity acceleration is 10M/S2, then it is greater than 118M2/S4 and less than 95 M2/S4 is the warning value.
以上对本发明的描述是说明性的， 而非限制性的， 本专业技术人员理解， 在权利要求限定的精神与范围之内可对其进行许多修改、 变化或等效， 但是它 们都将落入本发明的保护范围内。
The above description of the present invention is intended to be illustrative and not restrictive, and it will be understood by those skilled in the Within the scope of protection of the present invention.
Claims
1 . 一种判断是否前进或是溺水的装置， 其特征在于包括一判断装置， 以 及设于该判断装置上的加速度计与运算单元， 该加速度计具 X、 Υ、 Ζ三轴， 用 于感测动态重力加速度， 以及所在地区的当地静止重力加速度， 该运算单元用 于计算该加速度计三轴的动态重力加速度数值的平方和， 以及当地静止重力加 速度平方， 该判断装置利用在一段时间内， 该加速度计三轴输出数值的动态重 力加速度平方和大于该当地静止重力加速度平方以上的一数值， 或小于当地静 止重力加速度平方的数值变化， 作为判断水中的人是否陷入危急状态的依据。 What is claimed is: 1. A device for judging whether to advance or drown, characterized by comprising a judging device, and an accelerometer and an arithmetic unit disposed on the judging device, the accelerometer having three axes of X, Υ, Ζ for sensing Measuring the dynamic gravitational acceleration and the local static gravitational acceleration in the region, the arithmetic unit is used to calculate the sum of the squares of the dynamic gravitational acceleration values of the three axes of the accelerometer, and the square of the local static gravitational acceleration. The judging device is utilized for a period of time, The sum of the squares of the dynamic gravitational acceleration of the accelerometer's three-axis output value is greater than a value above the square of the local static gravitational acceleration, or less than the value of the square of the local static gravitational acceleration, as a basis for determining whether a person in the water is in a critical state.
2 . 如权利要求 1所述的判断是否前进或是溺水的装置， 其特征在于， 该 运算单元还用于计算该加速度计 X、 Υ、 Ζ三轴输出数值的平方和之后再开根号。 The device for determining whether to advance or drowning according to claim 1, wherein the operation unit is further configured to calculate a sum of squares of the three-axis output values of the accelerometers X, Υ, and 之后 and then open the root number.
3 . 如权利要求 1所述的判断是否前进或是溺水的装置， 其特征在于， 该 判断装置利用该加速度计 X、 Υ、 Ζ三轴输出数值的平方和小于当地静止重力加 速度平方以下的一数值的变化作为判断水中的人是否陷入危急状态的依据。 3. The apparatus for determining whether to advance or drown according to claim 1, wherein the determining means uses the sum of squares of the three-axis output values of the accelerometers X, Υ, and 小于 to be less than a square of the local static gravitational acceleration. The change in value serves as a basis for judging whether a person in the water is in a critical state.
4 . 如权利要求 1所述的判断是否前进或是溺水的装置， 其特征在于， 该 判断装置上还设有警报元件， 用以发出警示的声光或电子信号。
4. The apparatus for determining whether to advance or drown as claimed in claim 1, wherein the determining means further comprises an alarm element for emitting an acousto-optic or electronic signal of the warning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2013/001028 WO2015027358A1 (en) | 2013-09-02 | 2013-09-02 | Device for judging whether person is advancing or drowned |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2013/001028 WO2015027358A1 (en) | 2013-09-02 | 2013-09-02 | Device for judging whether person is advancing or drowned |
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| WO2015027358A1 true WO2015027358A1 (en) | 2015-03-05 |
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| PCT/CN2013/001028 WO2015027358A1 (en) | 2013-09-02 | 2013-09-02 | Device for judging whether person is advancing or drowned |
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| CN108986412A (en) * | 2018-09-03 | 2018-12-11 | 刘奇彬 | A kind of early stage drowns detection method and system |
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