CN104217538A - Child behavior remote early warning system - Google Patents

Abstract

The invention provides a child behavior remote early warning system. An instrument panel further comprises a cardiotachometer, the cardiotachometer is arranged on the surface of the back of the instrument panel in contact with the skin and transmits heart rate data to a smartphone through a bluetooth module. The instrument panel comprises a motion detection module and the bluetooth module, wherein the motion detection module detects three-dimensional acceleration and a relative turn angle; the bluetooth module is connected to the motion detection module and a data central server, and a data terminal server is connected with a parent mobile phone end. The motion detection module comprises a three-axis gravity acceleration sensor, a gyroscope and a digital signal processor (DSP), and the DSP comprises an integrator and a filtering and optimization module. The three-axis gravity acceleration sensor outputs X-axis, Y-axis and Z-axis acceleration data information, the gyroscope outputs angular speed information of the human body turn angle, and the integrator of the DSP performs integration on the angular speed information output by the gyroscope to obtain the relative turn angle of the human body.

Description

A kind of child behavior EW system

Technical field

The present invention relates to electronic applications, particularly a kind of child behavior EW system.

Background technology

Low age section children kindergarten and primary grades stage self-control poor; management and control power is poor, and moves more, and curiosity is strong; often to fall the situation of colliding with; kindergarten and school are closed management, and the head of a family cannot monitor the real time status of oneself child the moment, can not learn in time even if meet accident; the workload of teacher is large; cannot look after each child, therefore, unexpected situation cannot be avoided.

Along with the development of electronic technology and wireless communication technology, remote control technology comes into the life of people gradually, and how being understood the real-time behavior state of children by remote monitoring, is current problem demanding prompt solution.

Summary of the invention

The present invention proposes a kind of child behavior EW system, solves the problem of remote monitoring child behavior state.

Technical scheme of the present invention is achieved in that

A kind of child behavior EW system, entirety is ring-type, the embedded panel board in position in ring, the coated colored EVA material coating of panel board outside surface, panel board both sides arrange chain band, and form ring texture by chain band, chain band is the EVA chain band with described coating same color and material, and with described coating global formation, two side chain band junctions are put by pin shrinking;

Described panel board comprises: motion detection block, detects three-dimensional acceleration and relative rotation; Bluetooth module, is connected to described motion detection block and data center server, and data terminal server is connected with head of a family's mobile phone terminal;

Described motion detection block comprises three axle Gravity accelerometers, gyroscope and dsp processor, and dsp processor comprises integrator and filtering and optimizes module; Described three axle Gravity accelerometers export X, Y, Z axis acceleration information information, and gyroscope exports the angular rate information of human body corner, and the angular rate information integration that gyroscope exports by the integrator of dsp processor obtains the relative rotation of human body;

Described filtering and optimization module comprise the first subfilter, the second subfilter, the 3rd subfilter and senior filter, the first subfilter process X-axis acceleration information information, and provide state estimation x1 and estimation error covariance matrix p1; Second subfilter process Y-axis acceleration information information, provides state estimation x2 and estimation error covariance matrix p2; 3rd subfilter process Z axis acceleration information information, provides state estimation x3 and estimation error covariance matrix p3; Described state estimation x1, x2, x3 and estimation error covariance matrix p1, p2, p3 delivers to senior filter, and merges by formula (1) and formula (2) together with the state estimation of senior filter, obtains global optimum and estimates and covariance matrix:

${\hat{x}}_g=p_g\left(\underset{i=1}{\overset{3}{\mathrm{\Σ}}}{p}_i^{-1}{\hat{x}}_i\right)---\left(1\right)$

$p_g=\left(\underset{i=1}{\overset{3}{\mathrm{\Σ}}}{p}_i^{-1}\right)---\left(2\right)$

In formula, i=1,2,3;

The state estimation of optimal estimation value to 3 subfilters of senior filter resets, namely

${\hat{x}}_i={\hat{x}}_g---\left(3\right)$

$p_i={\mathrm{\β}}_i^{-1}{p}_g---\left(4\right)$

Using gravity, orientation and Y-axis are as analysis datum quantity vertically downward, and automatically adjust the size of p value, concrete adaptive algorithm is:

β ₁, β ₂, β ₃meet β ₁+ β ₂+ β ₃=1 (5)

${\mathrm{\β}}_1=\left\{\begin{array}{c}0.99,p\≤2\\ 2/p,2\≤p\≤5\\ 1/p,5\≤p\≤10\\ 2/p,p\≥10\end{array}\right.---\left(6\right)$

β ₂＝β ₃＝(1-β ₁)/2 (7)

Described dsp processor estimates according to global optimum and covariance matrix exports motor pattern and movement statistics, obtains the relative rotation of human body according to the angular rate information integration of gyroscope output human body corner;

Described panel board also comprises cardiotach ometer, and cardiotach ometer is arranged on the panel board back side and skin contact, by bluetooth module, heart rate data is transferred to smart mobile phone;

Cardiotach ometer comprises the controller that the green diode being arranged on described instrument panel shell lower surface, the sensor devices receiving reflected light and the frequency to the electric signal that photo-sensitive cell exports detect.

Alternatively, described bluetooth module is bluetooth 4.0 (BLE) communication module.

The invention has the beneficial effects as follows:

(1) child behavior EW system is worn on wrist, conveniently wears;

(2) external sheath EVA material, waterproof, nontoxic, tasteless;

(3) built-in dsp processor, is convenient to the renewal of system.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the structural representation of child behavior EW system of the present invention;

Fig. 2 is the control circui block diagram of child behavior EW system of the present invention;

Fig. 3 is filtering of the present invention and the schematic diagram optimizing module.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

As shown in Figure 1, a kind of child behavior EW system of the present invention, entirety is ring-type, the embedded panel board 1000 in position in ring, the coated colored EVA material coating of panel board outside surface, panel board both sides arrange chain band, ring texture is formed by chain band, chain band is the EVA chain band with described coating same color and material, and with described coating global formation, two side chain band junctions are put by pin shrinking.

Described panel board comprises: motion detection block, detects three-dimensional acceleration and relative rotation; Bluetooth module, is connected to described motion detection block and data center server, and data terminal server is connected with head of a family's mobile phone terminal.

Described motion detection block comprises three axle Gravity accelerometers, gyroscope and dsp processor, and dsp processor comprises integrator and filtering and optimizes module; Described three axle Gravity accelerometers export X, Y, Z axis acceleration information information, and gyroscope exports the angular rate information of human body corner, and the angular rate information integration that gyroscope exports by the integrator of dsp processor obtains the relative rotation of human body.

Described filtering and optimization module comprise the first subfilter, the second subfilter, the 3rd subfilter and senior filter, the first subfilter process X-axis acceleration information information, and provide state estimation x1 and estimation error covariance matrix p1; Second subfilter process Y-axis acceleration information information, provides state estimation x2 and estimation error covariance matrix p2; 3rd subfilter process Z axis acceleration information information, provides state estimation x3 and estimation error covariance matrix p3; Described state estimation x1, x2, x3 and estimation error covariance matrix p1, p2, p3 delivers to senior filter, and merges by formula (1) and formula (2) together with the state estimation of senior filter, obtains global optimum and estimates and covariance matrix:

${\hat{x}}_g=p_g\left(\underset{i=1}{\overset{3}{\mathrm{\Σ}}}{p}_i^{-1}{\hat{x}}_i\right)---\left(1\right)$

$p_g=\left(\underset{i=1}{\overset{3}{\mathrm{\Σ}}}{p}_i^{-1}\right)---\left(2\right)$

In formula, i=1,2,3;

The state estimation of optimal estimation value to 3 subfilters of senior filter resets, namely

${\hat{x}}_i={\hat{x}}_g---\left(3\right)$

$p_i={\mathrm{\β}}_i^{-1}{p}_g---\left(4\right)$

Using gravity, orientation and Y-axis are as analysis datum quantity vertically downward, and automatically adjust the size of p value, concrete adaptive algorithm is:

β ₁, β ₂, β ₃meet β ₁+ β ₂+ β ₃=1 (5)

${\mathrm{\β}}_1=\left\{\begin{array}{c}0.99,p\≤2\\ 2/p,2\≤p\≤5\\ 1/p,5\≤p\≤10\\ 2/p,p\≥10\end{array}\right.---\left(6\right)$

β ₂＝β ₃＝(1-β ₁)/2 (7)

Described dsp processor estimates according to global optimum and covariance matrix exports motor pattern and movement statistics, obtains the relative rotation of human body according to the angular rate information integration of gyroscope output human body corner.

Described panel board also comprises cardiotach ometer, and cardiotach ometer is arranged on the panel board back side and skin contact, by bluetooth module, heart rate data is transferred to head of a family's mobile phone.

Cardiotach ometer comprises the controller that the green diode being arranged on described instrument panel shell lower surface, the sensor devices receiving reflected light and the frequency to the electric signal that photo-sensitive cell exports detect.

Preferably, described bluetooth module is bluetooth 4.0 (BLE) communication module.

Bluetooth module and data center server bluetooth connect, wireless near field communication can be ensured, refectory child behavior EW system is all connected to same data center server, data center server is connected by head of a family's mobile phone of GPRS network and children again, the behavioral data of children is uploaded to head of a family's mobile phone, the head of a family can the exercise data of remote real-time monitoring oneself child and behavior state, such as, move, fall, static etc.

Preferably, described bluetooth module is bluetooth 4.0 (BLE) communication module.Bluetooth 4.0 is supplementing of bluetooth 3.0+HS specification, specially towards the wireless solution all had higher requirements to cost and power consumption, can be widely used in the numerous areas such as health care, physical fitness, home entertaining, safety guarantee.

Bluetooth 4.0 (BLE) communication module supports two kinds of deployment way: double mode and monotype.In double mode, low-power consumption Bluetooth function is integrated in existing classical bluetooth controller, or on existing classical Bluetooth technology (2.1+EDR/3.0+HS) chip, increases low-power consumption storehouse again, and overall architecture is substantially constant, and therefore cost increases limited.

Monotype is towards highly integrated, compact equipment, a lightweight articulamentum (Link Layer) is used to provide the operate in standby mode of super low-power consumption, simple device to recover and point-to-multipoint data transmission reliably, can also allow networked sensor in Bluetooth transmission, arrange the order of low-power consumption bluetooth flow properly, also have senior to be energy-conservationly connected with safety encipher simultaneously.

Child behavior EW system of the present invention also comprises dsp processor, and dsp processor is connected with described bluetooth module.Built-in dsp processor, is convenient to the renewal of later stage system, and dsp processor can have very strong compatibility to software upgrading.

Child behavior EW system of the present invention is worn on wrist, conveniently wears; External sheath EVA material, waterproof, nontoxic, tasteless; Built-in dsp processor, is convenient to the renewal of system.

The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (2)

1. a child behavior EW system, it is characterized in that, entirety is ring-type, the embedded panel board in position in ring, the coated colored EVA material coating of panel board outside surface, panel board both sides arrange chain band, ring texture is formed by chain band, chain band is the EVA chain band with described coating same color and material, and with described coating global formation, two side chain band junctions are put by pin shrinking;

Described panel board comprises: motion detection block, detects three-dimensional acceleration and relative rotation; Bluetooth module, is connected to described motion detection block and data center server, and data terminal server is connected with head of a family's mobile phone terminal;

Described motion detection block comprises three axle Gravity accelerometers, gyroscope and dsp processor, and dsp processor comprises integrator and filtering and optimizes module; Described three axle Gravity accelerometers export X, Y, Z axis acceleration information information, and gyroscope exports the angular rate information of human body corner, and the angular rate information integration that gyroscope exports by the integrator of dsp processor obtains the relative rotation of human body;

Described filtering and optimization module comprise the first subfilter, the second subfilter, the 3rd subfilter and senior filter, the first subfilter process X-axis acceleration information information, and provide state estimation x1 and estimation error covariance matrix p1; Second subfilter process Y-axis acceleration information information, provides state estimation x2 and estimation error covariance matrix p2; 3rd subfilter process Z axis acceleration information information, provides state estimation x3 and estimation error covariance matrix p3; Described state estimation x1, x2, x3 and estimation error covariance matrix p1, p2, p3 delivers to senior filter, and merges by formula (1) and formula (2) together with the state estimation of senior filter, obtains global optimum and estimates and covariance matrix:

${\hat{x}}_g=p_g\left(\underset{i=1}{\overset{3}{\mathrm{\Σ}}}{p}_i^{-1}{\hat{x}}_i\right)---\left(1\right)$

$p_g=\left(\underset{i=1}{\overset{3}{\mathrm{\Σ}}}{p}_i^{-1}\right)---\left(2\right)$

In formula, i=1,2,3;

The state estimation of optimal estimation value to 3 subfilters of senior filter resets, namely

${\hat{x}}_i={\hat{x}}_g---\left(3\right)$

$p_i={\mathrm{\β}}_i^{-1}{p}_g---\left(4\right)$

Using gravity, orientation and Y-axis are as analysis datum quantity vertically downward, and automatically adjust the size of p value, concrete adaptive algorithm is:

β ₁, β ₂, β ₃meet β ₁+ β ₂+ β ₃=1 (5)

${\mathrm{\β}}_1=\left\{\begin{array}{c}0.99,p\≤2\\ 2/p,2\≤p\≤5\\ 1/p,5\≤p\≤10\\ 2/p,p\≥10\end{array}\right.---\left(6\right)$

β ₂＝β ₃＝(1-β ₁)/2 (7)

Described dsp processor estimates according to global optimum and covariance matrix exports motor pattern and movement statistics, obtains the relative rotation of human body according to the angular rate information integration of gyroscope output human body corner;

Described panel board also comprises cardiotach ometer, and cardiotach ometer is arranged on the panel board back side and skin contact, by bluetooth module, heart rate data is transferred to smart mobile phone;

Cardiotach ometer comprises the controller that the green diode being arranged on described instrument panel shell lower surface, the sensor devices receiving reflected light and the frequency to the electric signal that photo-sensitive cell exports detect.

2. child behavior EW system as claimed in claim 1, it is characterized in that, described bluetooth module is bluetooth 4.0 (BLE) communication module.