CN118873124A - A sensor system for protecting the spinal health of students - Google Patents

Abstract

The invention relates to the technical field of health management, in particular to a sensing system for protecting the health of the spine of a student group, which comprises the following components: the sensing module is used for sensing the sitting posture state pressure parameters of the user in real time; the construction module is used for receiving the user sitting posture state pressure parameters sensed by the sensing module in real time and constructing a user sitting posture state model based on the user sitting posture state pressure parameters; the evaluation module is used for acquiring the user sitting posture state model constructed in the construction module and evaluating the safety of the user spine load state based on the user sitting posture state model; according to the invention, the user sitting posture state model is constructed by specific operation logic, and then whether the user spinal load state is safe or not is evaluated by the user sitting posture state model and is fed back to the user in a vibration mode, so that the effect of prompting the user sitting posture in real time is achieved, the user sitting posture health is maintained, the sitting posture correction device is different from the physical sitting posture correction device, the body of the user is not bound, and the bad sitting posture of the user is effectively prevented and corrected.

Description

A sensor system for protecting the spinal health of students

Technical Field

The present invention relates to the technical field of health management, and in particular to a sensor system for protecting the spinal health of a student group.

Background Art

The spinal health issues of students have always received widespread attention, and as a result, many spinal correction or sitting posture correction devices have been derived in society. The most common one is the "posture correction brace", which can help users maintain a correct sitting or standing posture by providing back support, thereby improving bad posture. At the same time, it can disperse the body weight and reduce the burden on the back, thereby reducing back fatigue caused by sitting for a long time.

The utility model patent with application number 202022245948.7 discloses a posture correction belt for spinal correction, including a main body, the main body including a back pair, shoulder straps are arranged on the left and right sides of the top of the back pair, and lead belts are connected to the ends of the two shoulder straps, and abdominal belts are arranged on the left and right sides of the bottom of the back pair; it also includes an adjustment plate, a main support bar is arranged in the middle of the front end of the back pair, a plurality of groups of fixed slots are arranged at the front end of the main support bar, two groups of fixed blocks are arranged at the rear end of the adjustment plate, the two groups of fixed blocks are respectively inserted into the two groups of fixed slots, and an adjustment belt is arranged at the front end of the adjustment plate, a cavity is arranged inside the adjustment belt, two groups of inlet ports are connected to the top of the adjustment belt, and outlet ports are connected to the left and right sides of the adjustment belt.

This application aims to solve the problem that "existing posture correction belts generally include a main body, the middle part of the main body is a back piece, shoulder straps are arranged on the left and right sides of the top of the back piece, the ends of the shoulder straps are connected to lead belts, and abdominal belts are arranged on the left and right sides of the bottom of the back piece. When in use, the two abdominal belts are wrapped around the abdomen, and the two shoulder straps are respectively passed around the two shoulders and crossed at the back, and connected at the bypass abdomen, so as to apply force backwards to the shoulders to achieve a correction effect. However, in order to correct the spine, it is necessary to disperse the force on the central part of the spine, but different users have different body shapes, and some users cannot make the force application part located in the central part of the spine. Therefore, the correction effect over the spine is poor, and even the purpose of correcting the spine cannot be achieved, resulting in low practicality."

However, long-term use of the "posture correction brace" may cause muscle atrophy, causing the back muscles to gradually lose their self-supporting ability, making spinal problems more serious.

Summary of the invention

In view of the above-mentioned shortcomings of the prior art, the present invention provides a sensor system for protecting the spinal health of students, which solves the technical problems raised in the above-mentioned background technology.

To achieve the above objectives, the present invention is implemented through the following technical solutions:

A sensor system for protecting the spinal health of a student group, comprising: a sensor module, used for sensing a user's sitting posture state pressure parameter in real time; a construction module, used for receiving the user's sitting posture state pressure parameter sensed by the sensor module in real time, and constructing a user's sitting posture state model based on the user's sitting posture state pressure parameter; an evaluation module, used for acquiring the user's sitting posture state model constructed in the construction module, and evaluating the safety of the user's spinal load state based on the user's sitting posture state model; a prompt module, used for prompting the user that the spinal load is large in the current sitting posture; a message module, used for recording the prompt module operation parameters, and generating a user sitting posture message based on the prompt module operation parameters; a feedback module, used for receiving the user sitting posture message generated in the message module, and feeding back the user sitting posture message to the user;

The sensing module is interactively connected to a pressure sensor and a database via a local area network, the sensing module is interactively connected to a construction module via a local area network, the construction module is electrically connected to an input unit via a medium, the construction module is interactively connected to a database via a local area network, the construction module is interactively connected to an evaluation module and a prompt module via a local area network, and the prompt module is interactively connected to a message module and a feedback module via a local area network.

Furthermore, the sensor module is provided with submodules at the lower level, including:

Pressure sensor, used to sense pressure parameters in real time;

A database, used to receive the user's sitting posture pressure parameters perceived in real time by the sensor module;

The pressure sensors are provided in four groups, and the four groups of pressure sensors are named left hip, right hip, left elbow, and right elbow respectively. The pressure sensors named left hip and right hip are installed on the left and right areas of the chair seat surface, and the pressure sensors named left elbow and right elbow are installed on the left and right areas of the desk surface. The pressure parameters sensed by the four groups of pressure sensors at the same timestamp are marked based on the names of the pressure sensors, and sent to and stored in the database;

Among them, the set of four groups of pressure parameters sensed by the four groups of pressure sensors at the same timestamp is recorded as the user's sitting state pressure parameters. When the pressure parameters sensed by the four groups of pressure sensors at the same timestamp are stored in the database, they are differentiated and stored based on the timestamp.

Furthermore, when constructing the user sitting posture state model, the construction module receives the user sitting posture state pressure parameters from the database, and sequentially constructs the user sitting posture state model based on the corresponding timestamps of each partition interval in the database, so that the user sitting posture state pressure parameters with earlier timestamps are preferentially used to construct the user sitting posture state model;

After the user sitting posture state model constructed by the construction module is completed, it is distinguished based on the corresponding timestamp of the user sitting posture state pressure parameter source distinction interval applied in the construction phase, and synchronously transmitted to the corresponding distinction interval in the database for storage.

Furthermore, the positions of the pressure sensors installed on the seats of the two groups of chairs are marked with coordinates (x, y, z) and (x′, y′, z′), and the positions of the pressure sensors installed on the desktops of the two groups of desks are marked with coordinates (i, j, q) and (i′, j′, q′);

In the stage of constructing the user sitting posture state model, the construction module uses two sets of pressure values sensed by the pressure sensors installed on the seats of the two sets of chairs, denoted as p1 and p2, to replace the values on the z-axis of the corresponding pressure sensor position coordinates, thereby obtaining two sets of new coordinates, namely (x, y, p1) and (x′, y′, p2). The two sets of new coordinates are connected to obtain a set of line segments.

The two sets of pressure values sensed by the pressure sensors installed on the two sets of desks are recorded as p3 and p4, and the values on the z-axis of the corresponding pressure sensor position coordinates are replaced respectively, so that two sets of new coordinates are obtained, namely (i, j, p3) and (i′, j′, p4). The two sets of new coordinates are connected to obtain a set of line segments;

A set of faces is determined based on the two sets of line segments. The determined faces are recorded as the user sitting posture state model, and a reference face is simultaneously configured for the user sitting posture state model. The reference face is a set of horizontal planes including coordinates (x, y, z) and (x′, y′, z′).

Furthermore, the building module is internally provided with submodules, including:

An input unit, used to input pressure parameters of a standard user sitting posture state and feed them back to a building module, and a standard user sitting posture state model is built through the building module;

Among them, during the operation stage of the input module, the user sits on the desk or chair in the correct sitting posture and remains still for three seconds. The sensor module operates once within a time period of 1 to 2 seconds within the time threshold of the user sitting on the desk or chair in the correct sitting posture and remains still for three seconds, and senses the user's sitting posture state pressure parameters. The sensed user sitting posture state pressure parameters are the standard user sitting posture state pressure parameters.

Furthermore, when evaluating the spinal load status of the user, the evaluation module always applies the three sets of user sitting posture status models most recently stored in the database for evaluation;

Where: sim(a ₁ ,b) is the similarity between the earliest user sitting posture state model a ₁ among the three groups of user sitting posture state models stored most recently and the standard user sitting posture state model b;

Wherein, _a1 , _a2 , and _a3 represent the three most recently stored user sitting posture models. When sim( _a1 , b)≥85% and either equation (1) or equation (2) holds, it indicates that the user's spinal load state is safe. Otherwise, it indicates that the user's spinal load state is unsafe.

Furthermore, the value of sim(a ₁ ,b) is obtained by the following formula:

Where: is the average slope of the user's sitting posture model a ₁ based on the reference surface; is the average slope of the standard user sitting posture model b based on the reference surface; is the standard deviation of the slope of the user sitting posture state model _a1 ; σ _b is the standard deviation of the slope of the standard user sitting posture state model b; is the maximum value of the two groups of slopes; is the maximum value of the standard deviation of the two groups of slopes; is the shortest distance from the farthest point on the user sitting posture model _a1 to the reference surface; d _b is the shortest distance from the farthest point on the standard user sitting posture model b to the reference surface.

Furthermore, the prompt module is integrated with a small vibrator, which is installed at the center of the seat surface of the classroom chair, and uses vibration as a prompt signal to prompt the user that the spinal load is heavy in the current sitting posture;

Among them, the prompt module runs to continuously receive the evaluation results of the evaluation module. When the evaluation results show that the user's spinal load state is unsafe for two consecutive times, the prompt module is triggered to run.

Furthermore, the user sitting posture message content generated in the message module includes: the number of prompt module operations, the prompt module operation timestamp, and the continuous operation time of each prompt module;

When the feedback module feeds back the user sitting posture message to the user, the mobile computer device with networking function held by the user is used as the transmission target, and the user sitting posture message is transmitted to the mobile computer device with networking function held by the user based on the local area network, and the user reads the user sitting posture message on the mobile computer device.

Compared with the known public technology, the technical solution provided by the present invention has the following beneficial effects:

The present invention provides a sensor system for protecting the spinal health of a student group. During operation, the system constructs a user sitting posture state model with a specific operation logic, and then uses the user sitting posture state model to evaluate whether the user's spinal load state is safe and provides feedback to the user in the form of vibration, thereby achieving the effect of real-time prompting of the user's sitting posture and maintaining the user's sitting posture health. Different from physical sitting posture correction equipment, the system does not restrain the user's body, effectively prevents and corrects the user's bad sitting posture, and protects the user's spinal health and vision health.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

FIG1 is a schematic diagram of the structure of a sensor system for protecting the spinal health of a student group;

FIG. 2 is an example diagram of a user sitting posture model and a reference surface in the present invention.

DETAILED DESCRIPTION

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

The present invention will be further described below in conjunction with the embodiments.

Embodiment 1:

A sensor system for protecting the spinal health of students in this embodiment, as shown in FIG1 , includes:

The sensor module is used to sense the user's sitting posture pressure parameters in real time;

The sensor module is equipped with sub-modules, including:

Pressure sensor, used to sense pressure parameters in real time;

A database, used to receive the user's sitting posture pressure parameters perceived in real time by the sensor module;

There are four groups of pressure sensors, which are named left hip, right hip, left elbow and right elbow respectively. The pressure sensors named left hip and right hip are installed on the left and right areas of the chair seat surface, and the pressure sensors named left elbow and right elbow are installed on the left and right areas of the desk surface. The pressure parameters sensed by the four groups of pressure sensors at the same timestamp are marked based on the names of the pressure sensors, and sent to and stored in the database;

Among them, the set of four groups of pressure parameters sensed by the four groups of pressure sensors at the same timestamp is recorded as the user sitting state pressure parameter. When the pressure parameters sensed by the four groups of pressure sensors at the same timestamp are stored in the database, they are differentiated and stored based on the timestamp;

A construction module is used to receive the user sitting posture state pressure parameters perceived by the sensor module in real time, and to construct a user sitting posture state model based on the user sitting posture state pressure parameters;

The building block has submodules inside, including:

An input unit, used to input pressure parameters of a standard user sitting posture state and feed them back to a building module, and a standard user sitting posture state model is built through the building module;

Among them, during the operation stage of the input module, the user sits on the desk or chair in the correct sitting posture and remains still for three seconds. The sensor module runs once within a time period of 1 to 2 seconds in the time threshold of the user sitting on the desk or chair in the correct sitting posture and remains still for three seconds, and senses the user's sitting posture state pressure parameters. The sensed user sitting posture state pressure parameters are the standard user sitting posture state pressure parameters;

An evaluation module, used for obtaining the user sitting posture state model constructed in the construction module, and evaluating the safety of the user's spinal load state based on the user sitting posture state model;

When evaluating the user's spinal load status, the evaluation module always uses the three sets of user sitting posture status models stored in the database for evaluation;

Where: sim(a ₁ ,b) is the similarity between the earliest user sitting posture state model a ₁ among the three groups of user sitting posture state models stored most recently and the standard user sitting posture state model b;

Wherein, a ₁ , a ₂ , and a ₃ represent the three most recently stored user sitting posture state models, sim(a ₁ ,b)≥85%, and when either equation (1) or equation (2) holds, it indicates that the user's spinal load state is safe, otherwise, it indicates that the user's spinal load state is unsafe;

The value of sim(a ₁ ,b) is obtained by the following formula:

Where: is the average slope of the user's sitting posture model a ₁ based on the reference surface; is the average slope of the standard user sitting posture model b based on the reference surface; is the standard deviation of the slope of the user sitting posture state model _a1 ; σ _b is the standard deviation of the slope of the standard user sitting posture state model b; is the maximum value of the two groups of slopes; is the maximum value of the standard deviation of the two groups of slopes; is the shortest distance from the farthest point on the user sitting posture model _a1 to the reference surface; d _b is the shortest distance from the farthest point on the standard user sitting posture model b to the reference surface;

A prompt module, used to prompt the user that the spinal load is heavy in the current sitting posture;

A message module, used for recording the operation parameters of the prompt module and generating a user sitting posture message based on the operation parameters of the prompt module;

A feedback module is used to receive the user sitting posture message generated in the message module and feed back the user sitting posture message to the user;

The sensing module is interactively connected to a pressure sensor and a database through a local area network, the sensing module is interactively connected to a building module through a local area network, the building module is electrically connected to an input unit through a medium, the building module is interactively connected to the database through the local area network, the building module is interactively connected to an evaluation module and a prompt module through the local area network, and the prompt module is interactively connected to a message module and a feedback module through the local area network.

In this embodiment, the sensing module runs to perceive the user's sitting posture state pressure parameters in real time, the pressure sensor perceives the pressure parameters in real time, the database synchronously receives the user's sitting posture state pressure parameters perceived in real time by the sensing module, the construction module further receives the user's sitting posture state pressure parameters perceived in real time by the sensing module, and constructs a user sitting posture state model based on the user's sitting posture state pressure parameters, the input unit synchronously inputs the standard user sitting posture state pressure parameters, and feeds back to the construction module, and the standard user sitting posture state model is constructed through the construction module, the evaluation module post-operates to obtain the user sitting posture state model constructed in the construction module, and the user's spinal load state safety is evaluated based on the user sitting posture state model, the prompt module further prompts the user that the spinal load is large under the current sitting posture, and then the message module records the prompt module operation parameters, generates a user sitting posture message based on the prompt module operation parameters, and finally receives the user sitting posture message generated in the message module through the feedback module, and feeds back the user sitting posture message to the user;

As shown in FIG2 , the upper group of faces in the figure represent the user's sitting posture model, and the lower plane represents the reference surface.

Embodiment 2:

At the specific implementation level, based on Example 1, this example further specifically describes a sensor system for protecting the spinal health of a student group in Example 1 with reference to FIG. 1 :

When the construction module constructs the user sitting posture state model, the received user sitting posture state pressure parameters are from the database, and the user sitting posture state models are constructed sequentially based on the corresponding timestamps of each partition interval in the database, so that the user sitting posture state pressure parameters with earlier timestamps are used to construct the user sitting posture state model first;

After the user sitting posture state model constructed by the construction module is completed, it is distinguished based on the time stamp corresponding to the user sitting posture state pressure parameter source distinction interval applied in the construction phase, and synchronously transmitted to the corresponding distinction interval in the database for storage.

Through the above settings, when the construction module is run to build the user sitting posture state model, further operation logic is provided to ensure that the user sitting posture state model is stably built.

As shown in FIG1 , the position coordinates of the pressure sensors installed on the seats of the two groups of chairs are marked as (x, y, z) and (x′, y′, z′), and the position coordinates of the pressure sensors installed on the desktops of the two groups of desks are marked as (i, j, q) and (i′, j′, q′);

In the stage of constructing the user sitting posture state model, the construction module uses two sets of pressure values sensed by the pressure sensors installed on the seats of two sets of classroom chairs, denoted as p1 and p2, to replace the values on the z-axis of the corresponding pressure sensor position coordinates, and then obtains two sets of new coordinates, namely (x, y, p1) and (x′, y′, p2). The two sets of new coordinates are connected to obtain a set of line segments;

The two sets of pressure values sensed by the pressure sensors installed on the two sets of desks are recorded as p3 and p4, and the values on the z-axis of the corresponding pressure sensor position coordinates are replaced respectively, so that two sets of new coordinates are obtained, namely (i, j, p3) and (i′, j′, p4). The two sets of new coordinates are connected to obtain a set of line segments;

A set of faces is determined based on the two sets of line segments. The determined faces are recorded as the user sitting posture state model, and a reference face is configured for the user sitting posture state model simultaneously. The reference face is a set of horizontal planes including coordinates (x, y, z) and (x′, y′, z′).

The above settings provide necessary parameter support for the construction of the user sitting posture state model, and provide source logic restrictions for the parameters used to construct the user sitting posture state model.

Embodiment 3:

At the specific implementation level, based on Example 1, this example further specifically describes a sensor system for protecting the spinal health of a student group in Example 1 with reference to FIG. 1 :

The prompt module is integrated with a small vibrator, which is installed in the center of the seat surface of the classroom chair. Based on the vibration as a prompt signal, it reminds the user that the spinal load is heavy in the current sitting posture;

Among them, the prompt module runs to continuously receive the evaluation results of the evaluation module. When the evaluation results show that the user's spinal load state is unsafe for two consecutive times, the prompt module is triggered to run.

As shown in Figure 1, the user sitting posture message content generated in the message module includes: the number of prompt module operations, the prompt module operation timestamp, and the continuous operation time of each prompt module;

When the feedback module feeds back the user's sitting posture message to the user, the mobile computer device with networking function held by the user is used as the transmission target, and the user's sitting posture message is transmitted to the mobile computer device with networking function held by the user based on the local area network. The user reads the user sitting posture message on the mobile computer device.

In this embodiment, through the above settings, the operating logic of the prompt module, message module and feedback module of the system in Example 1 is further limited to ensure that the system not only assists the user in correcting the sitting posture, but also provides feedback to the user on the sitting posture problems in the form of messages.

In summary, in the above embodiment, during operation, the system constructs a user sitting posture state model with a specific operation logic, and then uses the user sitting posture state model to evaluate whether the user's spinal load state is safe and provides feedback to the user in the form of vibration, thereby achieving the effect of real-time prompting of the user's sitting posture, maintaining the user's sitting posture health, and being different from physical sitting posture correction equipment. It does not restrain the user's body, effectively prevents and corrects the user's bad sitting posture, and protects the user's spinal health and vision health.

The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A sensing system for protecting spinal health in a student population, comprising:

The sensing module is used for sensing the sitting posture state pressure parameters of the user in real time;

The construction module is used for receiving the user sitting posture state pressure parameters sensed by the sensing module in real time and constructing a user sitting posture state model based on the user sitting posture state pressure parameters;

the evaluation module is used for acquiring the user sitting posture state model constructed in the construction module and evaluating the safety of the user spine load state based on the user sitting posture state model;

The prompting module is used for prompting that the spine load is large in the current sitting posture of the user;

the message module is used for recording the operation parameters of the prompt module and generating a user sitting posture message based on the operation parameters of the prompt module;

and the feedback module is used for receiving the user sitting posture message generated in the message module and feeding back the user sitting posture message to the user.

2. A sensing system for protecting spinal health in a student population according to claim 1, wherein said sensing module is provided at a lower level with a sub-module comprising:

the pressure sensor is used for sensing pressure parameters in real time;

The database is used for receiving the user sitting posture state pressure parameters sensed by the sensing module in real time;

The pressure sensors are provided with four groups, the four groups of pressure sensors are respectively named as left buttocks, right buttocks, left elbows and right elbows, the pressure sensors named as left buttocks and right buttocks are arranged in the left side area and the right side area of the seat surface of the tablet, the pressure sensors named as left elbows and right elbows are arranged in the left side area and the right side area of the table top of the desk, and the four groups of pressure sensors sense pressure parameters under the same timestamp and are marked based on the names of the pressure sensors and are sent to a database and stored;

The set of four groups of pressure parameters perceived by the four groups of pressure sensors under the same time stamp is recorded as the sitting posture state pressure parameters, and when the four groups of pressure parameters perceived by the four groups of pressure sensors under the same time stamp are stored in the database, the pressure parameters are stored in a distinguishing mode based on the time stamp.

3. The sensing system for protecting spinal health of student groups according to claim 1, wherein the construction module is configured to receive user sitting posture state pressure parameters from the database when constructing the user sitting posture state model, and to perform sequential user sitting posture state model construction based on time stamps corresponding to respective sections in the database, so that the user sitting posture state pressure parameters with early time stamps preferentially perform user sitting posture state model construction;

After the user sitting posture state model constructed by the construction module is constructed, the user sitting posture state model is distinguished based on the corresponding time stamp of the user sitting posture state pressure parameter source distinguishing interval applied in the construction stage, and the user sitting posture state model is synchronously transmitted to the corresponding distinguishing interval in the database for storage.

4. The sensing system for protecting spinal health of a student population according to claim 1, wherein the two groups of tablet chair seat surfaces are provided with pressure sensor position sitting marks (x, y, z), (x ', y', z '), and the two groups of desk tops are provided with pressure sensor position sitting marks (i, j, q), (i', j ', q');

In the stage of constructing the sitting posture state model of the user, the construction module is used for installing two groups of pressure values perceived by the pressure sensors on two groups of seat surfaces of the tablet computer, marking the pressure values as p1 and p2, respectively replacing the values on the z axis on the position coordinates of the corresponding pressure sensors, and obtaining two groups of new coordinates, namely (x, y, p 1), (x ', y', p 2), and connecting the two groups of new coordinates to obtain a group of line segments;

two groups of pressure values sensed by the pressure sensors are arranged on the desktops of the two groups of desktops and are recorded as p3 and p4, the values on the z axis on the position coordinates of the corresponding pressure sensors are replaced respectively, two groups of new coordinates are obtained, namely (i, j, p 3), (i ', j', p 4), and a group of line segments are obtained by connecting the two groups of new coordinates;

A set of faces is determined based on the two sets of line segments, the determined faces are used as a sitting posture state model, and reference faces are synchronously configured for the sitting posture state model of the user, and the reference faces are a set of horizontal faces containing coordinates (x, y, z) and (x ', y ', z ').

5. A sensing system for protecting spinal health in a student population according to claim 1, wherein said building module has a sub-module disposed therein, comprising:

The input unit is used for inputting the standard user sitting posture state pressure parameters, feeding the standard user sitting posture state pressure parameters back to the construction module, and constructing a standard user sitting posture state model through the construction module;

The input module operates at a period of 1-2 seconds in a time threshold that a user sits on a desk and a chair in a correct sitting posture and stands still for three seconds, and the sensing module operates once in a period of 1-2 seconds in a time threshold that the user sits on the desk and the chair in the correct sitting posture and stands still for three seconds, so that the user sitting posture state pressure parameter is sensed, and the sensed user sitting posture state pressure parameter is the standard user sitting posture state pressure parameter.

6. A sensing system for protecting spinal health in a student population according to claim 1, wherein said assessment module, when assessing the status of spinal load of a user, always applies the three sets of user sitting posture status models stored most recently in the database for assessment;

Wherein: sim (a ₁, b) is the similarity between the earliest set of user sitting posture state models a ₁ of the three newly stored sets of user sitting posture state models and the standard user sitting posture state model b;

Wherein a ₁、a₂、a₃ represents three newly stored user sitting posture state models, sim (a ₁, b) is more than or equal to 85%, and when any one of the formula (1) and the formula (2) is established, the spine load state of the user is safe, otherwise, the spine load state of the user is unsafe.

7. The sensing system for protecting spinal health in a student population of claim 6, wherein the values of sim (a ₁, b) are determined by the formula:

Wherein: An average slope based on a reference plane for the user sitting posture state model a ₁; an average slope based on a reference plane for the standard user sitting posture state model b; Standard deviation of slope for user sitting posture state model a ₁; σ _b is the standard deviation of the slope of the standard user sitting posture state model b; is the maximum value of the two groups of slopes; Is the maximum value of the two groups of slope standard deviations; Distance reference on model a ₁ for user sitting posture state the shortest distance from the furthest point of the surface to the reference surface; d _b is the shortest distance from the reference surface to the reference surface at the furthest point on the standard user sitting posture state model b.

8. The sensing system for protecting spinal health of a student population according to claim 1, wherein the prompting module is integrated by a small vibrator, the small vibrator is arranged at the center position of a seat surface of a tablet chair, and based on vibration, the sensing system prompts a user that the spinal load is large in the current sitting posture;

The prompt module is operated to continuously receive the evaluation result of the evaluation module, and the prompt module is triggered to operate when the continuous two-time evaluation result is that the spine load state of the user is unsafe.

9. A sensing system for protecting spinal health in a student population according to claim 1, wherein the user sitting posture message content generated in the message module comprises: the operation times of the prompt module, the operation time stamp of the prompt module and the continuous operation time of each prompt module;

when the feedback module feeds back the user sitting posture message to the user, the mobile computer equipment with the networking function held by the user is used as a transmission target, the user sitting posture message is transmitted to the mobile computer equipment with the networking function held by the user based on a local area network, and the user reads the user sitting posture message on the mobile computer equipment.

10. The sensing system for protecting the health of the spine of a student group according to claim 1, wherein the sensing module is interactively connected with the pressure sensor and the database through a local area network, the sensing module is interactively connected with a construction module through the local area network, the construction module is internally and electrically connected with an input unit through a medium, the construction module is interactively connected with the database through the local area network, the construction module is interactively connected with an evaluation module and a prompt module through the local area network, and the prompt module is interactively connected with a message module and a feedback module through the local area network.