WO2022120844A1

WO2022120844A1 - Smart helmet for detecting riding fall, alarm system and alarm method

Info

Publication number: WO2022120844A1
Application number: PCT/CN2020/135933
Authority: WO
Inventors: 郑波; 叶永正; 易湘棱
Original assignee: 深圳前海零距物联网科技有限公司
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2022-06-16

Abstract

A smart helmet for detecting a riding fall, an alarm system, and an alarm method. The smart helmet for detecting a riding fall comprises: a fall down information acquisition module (1), for acquiring, in the case of a fall down, collision data comprising collision strength; a control module (2), for making, according to the collision data inputted by the fall down information acquisition module, a decision about whether the collision is a fall down event, if the collision is a fall down event, generating a fall down alarm decision instruction, and outputting fall down alarm information; and an information transmission module (3), for forwarding outward, according to the control of the control module, the fall down alarm information made by the control module triggered by the fall down information acquisition module. As the smart helmet can accurately determine whether a collision is a fall down event, effectively avoiding mistakenly triggering an alarm, an alarm can be remotely given in time when a fall down occurs, and assistance can be provided in a timely manner, and especially the problem of outdoor riding safety and automatic remote distress call is solved.

Description

A kind of riding fall detection intelligent helmet, alarm system and alarm method

technical field

The invention relates to the technical field of helmets, and in particular to an intelligent helmet for riding fall detection, an alarm system and an alarm method.

Background technique

As an essential equipment for cycling, safety helmets can protect the rider and avoid accidental injuries and head injuries. Usually, the riders are riding together when riding, and the riding site is in many suburbs or areas with few people. During the riding process, the fellow riders may be separated by a long distance or have limited sight. For riders who accidentally fall due to various reasons, falling during cycling may have different consequences . In extreme cases , falling while riding may cause the rider to lose mobility or consciousness. In this case, if it cannot be effective in time Obtaining assistance may have serious consequences for the rider, and may even endanger life.

Although, existing helmets can send fall alarm information to the outside in the event of an accidental fall, for example, the helmet can activate acousto-optical local alarm or send alarm information to a preset emergency contact, so as to obtain timely help and avoid further intentions. out happens. However, when the emergency contact is triggered by the helmet to send the alarm information to the emergency contact, if the emergency contact is not nearby, even if the emergency contact is not in the local area, even if the fall alarm information is received, the relevant rescue information will be transferred to the hospital or rescue agency for help. , so that the timeliness of rescue is poor, which may affect the effect of rescue. At the same time, due to social networking, information acquisition and other mobile communication terminals such as mobile phones have gradually become one of the necessary supplies for people to go out and exercise. How to effectively use the linkage between mobile terminals and riding helmets to realize the timeliness and effectiveness of fall alarm in the riding scene in the suburbs or areas where there are few people.

technical problem

The main technical problem to be solved by the present invention is to provide a riding fall detection intelligent helmet, an alarm system and an alarm method, wherein the riding fall detection intelligent helmet can automatically send a falling fall to the outside when an accidental fall or fall occurs while riding. Fall information, improve the timeliness of cycling fall alarm, and reduce the risk of cycling.

technical solutions

In order to solve the above technical problems, the present invention provides a riding fall detection smart helmet, which includes:

Fall information collection module, collect collision data including collision intensity when falling;

The control module makes a decision on whether the collision is a fall event according to the collision intensity input by the fall information acquisition module, generates a fall alarm decision instruction when the collision is a fall event, and outputs the fall alarm information;

The information transmission module, according to the control of the control module, forwards the fall alarm information output by the control module triggered by the fall information acquisition module.

Further, the fall information collection module includes a sensor and a positioning unit, wherein the sensor includes a three-axis, six-axis or nine-axis acceleration sensor or/and an angular velocity sensor, and the positioning unit includes a north shake locator and/or GPS Locator.

Further, the alarm information includes fall danger level information, location information and help information generated based on the collision intensity information.

Further, the information transmission module includes a short-distance communication module.

Further, the short-range communication module includes a Bluetooth unit.

The present invention also provides an intelligent helmet fall alarm system. The intelligent helmet fall alarm system includes an alarm server, a fall alarm user terminal and at least one alarm receiving user terminal respectively established in communication with the alarm server, and also includes triggering a fall. The smart helmet that alarms the user terminal to issue an alarm, wherein,

The smart helmet determines whether a fall event has occurred, and triggers the output of the fall alarm information corresponding to the fall event when the fall event occurs;

The fall alarm user terminal establishes a short-distance communication connection with the smart helmet, receives the fall alarm information from the smart helmet when a fall event occurs, and triggers the sending of the fall alarm location information and the received fall alarm information to the alarm server;

The alarm server searches for the alarm receiving user terminal from the preset first search range according to the received position information, and sends the alarm information and the alarm location information to the alarm receiving user terminal in the first search range, when the alarm in the first search range is alarmed When receiving user terminal feedback to accept the alarm, stop searching for other alarm receiving user terminals. When no alarm receiving user terminal accepts alarm feedback or exceeds the preset time to accept the alarm, the preset second search range is searched, and all alarm receiving user terminals are searched. The terminal sends the alarm information and the alarm position information, and the user terminal receives the alarm and stops sending the alarm information until the alarm receiving user terminal accepts the alarm feedback, wherein the radius of the first search range centered on the alarm position is smaller than the radius of the second search range, or,

According to the received location information, find the alarm receiving user terminal closest to the alarm location on the network, and send the alarm information and alarm location information to the alarm receiving user terminal. When the nearest alarm receiving user terminal accepts the alarm feedback, it stops sending other The alarm of the location is sent by the user terminal. When there is no alarm receiving user terminal to accept the alarm feedback or the alarm is accepted after the preset time, the alarm information and the alarm location information are sent to the alarm receiving user terminal that is the second closest to the alarm position, and then the alarm information is sent to the alarm receiving user terminal. Until there is an alarm receiving user terminal to accept the alarm feedback and stop sending the alarm information;

The alarm receiving user terminal receives the fall alarm information and location information distributed by the alarm server, and feeds back the fall alarm acceptance result.

Further, the alarm location information includes the location information of the smart helmet or the location information of the fall alarm user terminal.

Further, the fall alarm information includes fall danger level information obtained from the collision intensity and health state information of the fall alarm user preset by the fall alarm user terminal.

Further, the smart helmet includes a fall information collection module, a fall control module and an information transmission module, wherein,

The control module makes a decision on whether the collision is a fall event according to the collision process data input by the fall information acquisition module, generates a fall alarm decision instruction when the collision is a fall event, and outputs the fall alarm information;

Further, the fall alarm user terminal and the alarm receiving user terminal respectively comprise mobile communication terminals.

The present invention also provides a smart helmet fall alarm method, the smart helmet fall alarm method includes:

The step of determining the helmet fall event, the real-time detection of the collision intensity data of the smart helmet is compared with the preset threshold, and when the helmet collision intensity signal is greater than the preset threshold, it is determined that the detected collision is a fall event, and a fall event is sent to the outside. Fall alarm information and smart helmet location information triggered by fall events;

The step of sending a fall alarm, the fall alarm user terminal that establishes communication with the smart helmet receives and sends the alarm location information including the location of the smart helmet or the fall alarm user terminal and the fall alarm information to the alarm server, and requests the alarm server to send the information to the online server. The alarm receiving user terminal sends fall alarm information and alarm location information;

In the step of distributing fall alarm information, the alarm server searches for alarm receiving user terminals from a preset first search range and sends alarm information and alarm location information to all alarm receiving user terminals in the first search range. When the receiving user terminal accepts alarm feedback, stop sending it to other alarm receiving user terminals. When there is no alarm receiving user terminal in the first search range, when the alarm receiving user terminal does not give feedback, or receives alarm feedback beyond the preset time period, the alarm server is expanded to the first The second search range searches for the alarm receiving user terminal, and sends the alarm information and the alarm location information to all the alarm receiving user terminals in the second search range. When there is no alarm receiving user terminal in the second search range, when the alarm receiving user terminal does not give feedback or receives alarm feedback beyond the preset time period, the alarm server sends to the search range near and far from the alarm position in turn, until the alarm is sent. Receive feedback from the user terminal and stop sending the alarm information and send the alarm information to the retrieval range near and far from the alarm position in turn, until the alarm receiving user terminal feedback stops sending the alarm information, wherein the radius of the first search range centered on the position is smaller than the radius of the second search range. scope; or,

The alarm server searches for the alarm receiving user terminal closest to the alarm position from all the alarm receiving user terminals on the network, and sends the alarm information and alarm position information to the alarm receiving user terminal. When the nearest alarm receiving user terminal feedbacks the alarm acceptance When the alarm receiving user terminal is closest to the alarm receiving user terminal, the alarm server expands the search range, and then sends the alarm information to the alarm receiving user terminal that is the second closest to the alarm location. and alarm location information, and send to the near and far from the alarm location in turn, until the alarm receiving user terminal accepts the alarm feedback and stops sending the alarm information.

Further, the step of sending a fall alarm also includes, after receiving the alarm position information and the fall alarm information, first comparing the smart helmet position information with the fall alarm user terminal position information, and determining the alarm position and the fall alarm position. The distance between the positions of the alarm user terminals. When the distance is greater than the preset threshold, the smart helmet position information is selected as the alarm position information to be sent out. When the distance is less than the preset threshold, the position information of the fall alarm user terminal is selected as the alarm position information. The alarm location information is sent out.

Further, the step of sending a fall alarm also includes, after receiving the alarm location information and the fall alarm information, synchronously searching for the specific contact information preset by the fall alarm user terminal, and using the information of the fall alarm user terminal. The public network sends alarm location information and fall alarm information to specific contacts.

Further, the fall alarm information includes the danger level information obtained from the collision intensity and the fall alarm user health state information preset by the fall alarm user terminal.

Further, the step of determining a helmet fall event includes:

Monitor the triaxial acceleration according to the preset monitoring frequency;

calculating the three-axis acceleration vector sum, and judging whether a free fall event occurs according to whether the acceleration vector sum satisfies a first preset condition;

judging whether a collision event occurs according to whether the acceleration of any one of the three axes satisfies the second preset condition;

judging whether a stationary event occurs according to whether the acceleration variation detected by each axis satisfies the third preset condition; and

generating a distress signal according to the stationary event meeting a fourth preset condition;

The first preset condition is that the acceleration vector sum is continuously smaller than the first threshold and the duration exceeds the first duration, and the second preset condition is that the acceleration of any one axis is continuously greater than the second threshold and the duration exceeds a second duration; the third preset condition is that the acceleration change is continuously smaller than the third threshold and the duration exceeds the third duration, and the fourth preset condition is that the stationary event occurs after the impact event occurs within a fourth time period after that, wherein the third time period is shorter than the fourth time period.

Further, the smart helmet fall detection method further includes:

comparing the time interval of the impact event and the free fall event to a predetermined failure duration; and

Perform the step of judging whether a stationary event occurs according to the comparison result that the time interval is less than or equal to the failure duration, or return to the step of monitoring the triaxial acceleration according to the comparison result that the time interval is greater than the failure duration.

Further, the first threshold is 0.3-0.6g, the first duration is 400ms-500ms; the second threshold is 1.5-2g, the second duration is 300ms-450ms; the third threshold It is 0.3g~0.6g, and the third duration is 8~15s; the fourth duration and the third duration differ by 2~5s.

Further, the first threshold is 0.54g, the first duration is 450ms, the second threshold is 1.992g, the second duration is 400ms, the third threshold is 0.5g, and the third threshold is 0.5g. The third duration is 11s, and the fourth duration is 15s.

Further, the fall detection method further includes:

detecting whether the quiescence event continues to occur; and

If the still event is not detected for three consecutive times, an alarm clear signal is generated to stop the distress signal.

beneficial effect

According to the present invention, an intelligent helmet, an alarm system and an alarm method for riding and fall detection are provided, wherein the fall information collection module collects the collision data including the collision intensity when falling; the control module is based on the collision input from the fall information collection module. The decision of whether the collision is a fall event is made through the data. When the collision is a fall event, a fall alarm decision instruction is generated, and the fall alarm information is output; the information transmission module is forwarded according to the control module. The module triggers the fall alarm message made by the control module. Because the smart helmet can accurately determine whether the collision is a fall event, it can effectively avoid false triggering of the alarm. When a fall occurs, it can remotely alarm and get help in time, especially solving the problems of outdoor riding safety and automatic remote call for help.

Description of drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the drawings that are required in the description of the embodiments or the prior art. Obviously, the drawings in the description only show Therefore, it should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related appendices can also be obtained according to these drawings. picture.

Figure 1 is an electrical block diagram of an embodiment of a fall detection smart helmet.

FIG. 2 is a schematic flowchart of fall detection.

FIG. 3 is a schematic flowchart of judging whether a static event occurs.

Figure 4 is a schematic diagram of the alarm network structure of the fall detection intelligent helmet alarm system.

FIG. 5 is a schematic flowchart of a fall detection smart helmet alarm method.

FIG. 6 is a schematic diagram of a step of distributing fall alarm information.

Fig. 7 is a schematic flow chart of the steps of distributing the fall alarm information.

FIG. 8 is a schematic flowchart of another embodiment of the step of distributing the fall alarm information.

The realization, functional characteristics and advantages of the present invention will be further described below in conjunction with the embodiments and with reference to the accompanying drawings.

BEST MODE FOR CARRYING OUT THE INVENTION

The claims of the present invention will be further described in detail below with reference to the specific embodiments and the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work, also belong to the protection scope of the present invention.

It should be understood that, in the description of the embodiments of the present invention, all directional indicated terms, such as "up", "down", "left", "right", "front", "rear", etc. indicate the orientation or position The relationship is based on the orientation and positional relationship shown in the drawings or the orientation or positional relationship that the product of the invention is usually placed in use, and is only for the convenience of simplifying the description of the present invention, rather than expressly or impliedly referring to the device, element or component must be Having a specific orientation and a specific orientation configuration should not be construed as limiting the present invention. It is only used to explain the relative positional relationship, movement situation, etc. between the various components shown in the drawings. When the specific posture changes, the directional indication may also change accordingly.

In addition, the descriptions of ordinal numbers such as "first" and "second" in the present invention are only for the purpose of differentiation, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. The features thus defined as "first" and "second" may be expressed or implied and at least one of the technical features. In the description of the present invention, "a plurality" means at least two, that is, two or more, unless otherwise expressly defined; "at least one" means one or one and above.

In the present invention, unless otherwise expressly specified and limited, the terms "installation", "arrangement", "connection", "fixation", "screw connection" and other terms should be understood in a broad sense, for example, it can be used between components The positional relationship between the components is relatively fixed, or there is a physical fixed connection between the components, which can be a detachable connection or an integrated structure; it can be a mechanical connection or an electrical signal connection; it can be directly connected or It can be indirectly connected through an intermediate medium or component; it can be either the internal communication between two elements, or the interaction relationship between the two elements. Unless the description clearly defines otherwise, it can be understood that the corresponding function or effect cannot be achieved. In addition, those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

The controllers and control circuits that the present invention may involve are conventional control technologies or units of those skilled in the art. For example, the control circuit of the controller can be implemented by those skilled in the art using existing ones, such as simple programming. For the software or program that cooperates with hardware to realize the control result, if the description does not give a detailed description to indicate the software or program control process involved, it belongs to the prior art or the conventional technology of those skilled in the art. The power supply also adopts the existing technology in the art, and the main technical point of the present invention is to improve the mechanical device, so the present invention will not describe the specific circuit control relationship and circuit connection in detail.

As shown in FIG. 1 , the present invention provides an embodiment of an intelligent helmet for riding fall detection.

This cycling fall detection smart helmet includes:

Fall information collection module 1, collects collision data including collision intensity when falling;

The control module 2 makes a decision on whether the collision is a fall event according to the collision intensity input by the fall information acquisition module, generates a fall alarm decision instruction when the collision is a fall event, and outputs the fall alarm information;

The information transmission module 3, according to the control of the control module, forwards the fall alarm information output by the control module triggered by the fall information acquisition module to the outside.

Specifically, the hardware of the control module 2 is usually implemented using existing technologies, such as microprocessors and the like. The information transmission module 3 adopts a short-distance transmission unit, such as a Bluetooth unit. The fall information collection module adopts sensors of acceleration and angular velocity, and a positioning unit that can collect position information when the smart helmet collides, wherein the sensors include three-axis, six-axis or nine-axis acceleration sensors or/and angular velocity sensors, and the The positioning unit includes a beijing locator and/or a GPS locator.

When in use, when a collision occurs, the acceleration and/or angular velocity sensor generates corresponding signals, and triggers the positioning unit to collect positioning information, and the control module processes the collision intensity information and collision time information generated by the acceleration and/or angular velocity signals. , when the collision intensity is greater than the preset threshold, it is determined that the collision is a fall event, a fall alarm decision instruction is generated, and the fall alarm information and location information are output. When the collision intensity is not greater than the preset threshold, it is determined that the collision is a non-fall event, and the control module neither generates a fall alarm decision instruction, nor outputs the fall alarm information and position information to the outside. The fall alarm information may include fall danger level information and fall time information generated based on the collision intensity information, and call for help information as required. By accurately distinguishing from falling while riding, it can effectively avoid false triggering of the alarm, and solve the problems of riding safety and calling for help.

According to requirements, the smart helmet for riding and fall detection further includes a positioning module 4 for collecting the position information of the helmet at the time of collision. At this time, the control module 2 makes a decision on whether it is a fall according to the collision intensity information input by the fall information collection module 1, and when it is determined that the collision is a fall event, a fall alarm decision instruction is generated, and at the same time, the positioning module 4 is triggered to output the positioning information , and output the fall alarm information and the fall danger level information generated based on the collision intensity information. The fall alarm information includes helmet position information, fall danger level information generated based on the collision intensity information, and collision time information. At this time, the information transmission module 3 forwards the above-mentioned fall alarm information made by the fall control module to the outside according to the control of the control module.

Since the positioning module 4 can be triggered to obtain the position information only when there is a collision and a fall event, the power consumption of the helmet's own power supply can be reduced, and the battery life can be improved. The location information can also be determined by the mobile terminal by means of the base station as needed.

Now, the three-axis acceleration sensor is used as the falling information acquisition module 1, and the controller is used as the control module as an example to illustrate its working process in detail.

The three-axis acceleration sensor is used to detect the three-axis acceleration, and the controller is used for: monitoring the three-axis acceleration according to a preset monitoring frequency; calculating the three-axis acceleration vector sum, and according to whether the acceleration vector sum satisfies the first preset According to whether the acceleration of any one of the three axes satisfies the second preset condition, it is judged whether the collision event occurs; according to whether the acceleration change detected by each axis satisfies the third preset Determine whether a stationary event occurs according to the condition; and generate a distress signal according to the stationary event satisfying a fourth preset condition.

Wherein, the first preset condition is that the acceleration vector sum is continuously smaller than the first threshold and the duration exceeds the first duration, and the second preset condition is that the acceleration of any one axis is continuously greater than the second threshold and continues The time exceeds the second time period, the third preset condition is that the acceleration change is continuously smaller than the third threshold and the duration exceeds the third time period, and the fourth preset condition is that the stationary event occurs since the impact. Within a fourth period of time after the event occurs, wherein the third period of time is shorter than the fourth period of time.

Wherein, the first threshold is 0.3-0.6g, the first duration is 400ms-500ms; the second threshold is 1.5-2g, the second duration is 300ms-450ms; the third threshold is 0.3 g~0.6g, the third duration is 8~15s; the fourth duration and the third duration differ by 2~5s.

The first threshold is 0.54g, the first duration is 450ms, the second threshold is 1.992g, the second duration is 400ms, the third threshold is 0.5g, and the third duration is 11s , the fourth duration is 15s.

The controller is further configured to compare the time interval between the impact event and the free-fall event with a predetermined failure duration; and perform the judging whether quiescence occurs according to the comparison result that the time interval is less than or equal to the failure duration The step of event, or returning to the step of monitoring the three-axis acceleration according to the comparison result that the time interval is greater than the failure duration, and for detecting whether the stationary event continues to occur; and if the stationary event is not detected for three consecutive times event, generate an alarm clear signal to stop the distress signal.

As shown in FIG. 2 , the decision-making process of the smart helmet fall event is illustrated by taking the three-axis acceleration as an example, which includes the following steps.

In step S1, the triaxial acceleration is monitored according to a preset monitoring frequency.

In step S2, the three-axis acceleration vector sum is calculated, and whether a free fall event occurs is determined according to whether the acceleration vector sum satisfies a first preset condition.

In step S3, it is determined whether a collision event occurs according to whether the acceleration of any one of the three axes satisfies the second preset condition.

In step S4, it is determined whether a stationary event occurs according to whether the detected acceleration variation of each axis satisfies the third preset condition.

Step S5, generating a distress signal according to the stationary event meeting a fourth preset condition.

Before step S1, the triaxial acceleration sensor is initialized to correctly detect fall events. In step S1, the controller monitors the triaxial acceleration according to a certain frequency, and the monitoring frequency may be the same as or different from the output frequency of the triaxial acceleration sensor.

In step S2, the controller waits for a free fall event that satisfies a first preset condition to occur. The first preset condition is that the acceleration vector sum is continuously smaller than the first threshold and the duration exceeds the first duration. The specific first threshold sum and The first duration is determined according to the riding characteristics. In this embodiment, the first threshold (Thresh-FF) is set to 0.3~0.6g according to the height range of the cyclist while riding, where g represents the acceleration of gravity, and the first duration (Time-FF) is set to 400ms~500ms . The first threshold is 0.54g, and the first duration is 450ms. A free fall event occurs when the acceleration vector sum is continuously less than the first threshold and the duration exceeds the first time period. If no free fall event occurs, return to step S1.

In step S3, the controller waits for an impact event that satisfies a second preset condition to occur. The second preset condition is that the acceleration of any axis is continuously greater than the second threshold and the duration exceeds the second duration. The specific second threshold and the second duration are determined according to the riding characteristics. In this embodiment, the second threshold (Thresh-Act) is set to 1.5~2g according to the riding speed range of the cyclist, and the second time period (Time-Act) is set to 300~450ms. Preferably, the second threshold is 1.992g, and the second duration is 400ms. When the acceleration of any axis (the impact may occur in any direction) is greater than the second threshold and the duration exceeds the second time period, it is considered that the cyclist hits the ground, and an impact event occurs. If no collision event occurs, return to step S1.

In step S4, the controller waits for a stationary event that satisfies a third preset condition to occur, where the third preset condition is that the acceleration change is continuously smaller than a third threshold and the duration exceeds a third time period. In this embodiment, the third threshold (Thresh-Inact) is set to 0.3g~0.6g, and the third time period (Time-Inact) is set to 8~15s. Preferably, the third threshold is 0.5g, and the third threshold is 0.5g. The third time is 11s. A stationary event occurs when the amount of change in the acceleration of each axis is less than the third threshold and the duration exceeds the third time period. The amount of change refers to the difference between the maximum value and the minimum value detected in at least the third time period. The cyclist hardly moves in the third time period, indicating that he or she is likely to be in a coma or unable to move. .

In step S5, considering that the cyclist will not immediately stand still for at least the third period of time after hitting the ground after falling at the riding speed, it will largely roll for a certain period of time before standing still. Therefore, A fourth preset condition needs to be set to make a reasonable judgment. In this embodiment, the fourth preset condition is specifically adding a buffer time after the impact event occurs, that is, if the stationary event occurs within the fourth time period after the impact event occurs, it means that the body is in free fall -Crash-Station All three events occur, the rider has fallen and needs to send out a distress signal. The distress signal is issued by the controller by sending a control signal to the corresponding distress module. The form of the distress signal is not limited, such as issuing distress sound and light prompts, reporting the mobile phone to send a distress text message or dialing a distress call. In this embodiment, the difference between the fourth duration and the third duration is 2-5 s. Preferably, the fourth duration is 15s.

If the above events do not meet the corresponding preset conditions, it means that the fall event is not established, and the three-axis acceleration continues to be monitored.

In order to further accurately judge the correlation between the free fall event and the impact event during riding, preferably, please refer to FIG. 3 , and the fourth step further includes steps S41 to S42 .

Step S41, comparing the time interval between the impact event and the free fall event with a predetermined failure duration.

Step S42, executing the step of judging whether a static event occurs according to the comparison result that the time interval is less than or equal to the failure duration, or returning to the monitoring triaxial acceleration according to the comparison result that the time interval is greater than the failure duration A step of.

In step S41 , the failure duration is set, such as 200ms, that is, the time interval between the impact event and the free fall event is less than 200ms, which means that there is a strong correlation between the free fall and the impact, and the stationary event can be waited for. If it exceeds 200ms, it means that there is only free fall but no impact. It can be considered that there is no correlation between free fall and impact, and the acceleration is continued to be monitored.

After the distress signal is issued, it can also detect whether the static event continues to occur; and if the static event is not detected for three consecutive times, it means that the person who fell can move, and an alarm cancellation signal is generated to continue monitoring after the triaxial sensor is initialized. .

Because the smart helmet fall event decision is made by installing a three-axis acceleration sensor on the smart helmet to measure the acceleration, and by analyzing the change of the acceleration of the fall event during riding to determine whether a fall event occurs, and alarm according to the fall event. , so as to solve the problem of falling detection and calling for help during the riding process.

As shown in FIG. 4 , the present invention also provides an embodiment of a smart helmet fall alarm system.

The smart helmet fall alarm system includes an alarm server C, a fall alarm user terminal B and at least one alarm receiving user terminal D respectively established in communication with the alarm server C, and also includes an intelligent device that triggers the fall alarm user terminal B to issue an alarm Helmet A, wherein the smart helmet determines whether a fall event occurs, and triggers to output the fall alarm information corresponding to the fall event when the fall event occurs;

Specifically, the smart helmet A determines whether a fall event occurs, and triggers the output of the fall alarm information corresponding to the fall event when the fall event occurs;

The fall alarm user terminal B establishes a short-distance communication connection with the smart helmet, receives the fall alarm information output from the smart helmet A when a fall event occurs, and triggers the transmission of the received fall alarm information to the alarm server C. The fall alarm The information includes help information, and may also include fall danger level information generated based on the collision intensity information.

The alarm server C searches for the alarm receiving user terminal D from the preset first search range according to the received position information, and sends the alarm information and the position information to the alarm receiving user terminal D within the first search range. When the alarm receiving user terminal D reports an alarm to accept the alarm, stop searching for other alarm receiving user terminals D, and when no feedback is received or when the alarm receiving user terminal D exceeds the preset time to accept the alarm, it searches for all alarm receiving user terminals D in the preset second search range to send the alarm information. and position information, and stop sending alarm information until there is feedback from the alarm receiving user terminal D, wherein the radius of the first search range centered on the alarm position is smaller than the radius of the second search range.

The alarm server C can also search for the alarm receiving user terminal D closest to the location on the network according to the received alarm location information, and send the alarm information and the alarm location information to the alarm receiving user terminal D. When the nearest alarm receiving user terminal When D feedbacks to accept the alarm, it stops looking for the alarm receiving user terminal D in other locations, and when no feedback is received or the alarm is accepted beyond the preset time, the alarm information and location information are sent to the alarm receiving user terminal D that is the second closest to the location. , and in turn stop sending alarm information until there is an alarm receiving user terminal D feedback;

The alarm receiving user terminal D receives the fall alarm information and location information distributed by the alarm server C, and feeds back the fall alarm acceptance result.

The alarm receiving user terminal D and the fall alarm user terminal B respectively use existing smart phones, usually with a positioning function, and APP software can also be preset. The location information includes the location information of the smart helmet and/or the location information of the fall alarm user terminal. The fall alarm information includes the fall danger level information obtained from the collision intensity and the fall alarm user health state information preset by the fall alarm user terminal, and the fall alarm user health state information can be helpful for better rescue. deal with.

When the fall alarm is triggered, the alarm server sends alarm information to users near and far away from the alarm location, and the online users who are at the nearest location can receive the alarm information, which can help improve the ability of users who receive the alarm to receive the alarm in a timely manner. Reach the falling position, provide timely rescue for the fallen cyclist, and improve the efficiency of rescue and the effect of alarm.

The smart helmet adopts the above embodiment, that is, it includes a fall information collection module, a fall control module and an information transmission module, wherein,

According to requirements, the smart helmet for riding and fall detection further includes a positioning module 4 for collecting the position information of the helmet at the time of collision. At this time, the control module 2 makes a decision on whether it is a fall according to the collision intensity information input by the fall information collection module 1, and when it is determined that the collision is a fall event, a fall alarm decision instruction is generated, and at the same time, the positioning module 4 is triggered to output the positioning information , and output fall alarm information, as well as fall danger level information generated based on the collision intensity information.

At this time, the information transmission module 3 forwards the above-mentioned fall alarm information made by the fall control module to the outside according to the control of the control module. Since the positioning module 4 can be triggered to obtain the position information only when there is a collision and a fall event, the power consumption of the helmet's own power supply can be reduced, and the battery life can be improved.

When the smart helmet A is provided with the positioning module 4, when an alarm is triggered, the smart helmet A sends information alarm information to the fall alarm user terminal B, and also sends the helmet position information collected by the positioning module 4. At this time, the fall alarm user terminal B compares the received helmet position with the fall alarm user terminal B's own positioning data, and when the two distances are within the preset range, one of the position information can be selected and sent together with the alarm information Give the user terminal B a fall alarm. When the distance between the two is out of the preset range, the helmet position and the alarm information are sent to the fall alarm user terminal B. This can ensure the accuracy of the location and improve the timeliness of asking for help after the alarm.

As shown in FIG. 5 , the present invention also provides an embodiment of a smart helmet fall alarm method.

The smart helmet fall alarm method is suitable for helmets without a positioning function, and includes:

Determining the helmet fall event step S1, specifically, the real-time detection of the collision intensity data of the smart helmet A is compared with a preset threshold, and when the helmet collision intensity signal is greater than the preset threshold, it is determined that the detected collision is a fall event, And send out the fall alarm information and smart helmet location information triggered by the fall event;

Sending a fall alarm step S2, specifically, the fall alarm user terminal B that establishes communication with the smart helmet A receives and sends the alarm position information and the fall alarm information including the position of the smart helmet or the position of the fall alarm user terminal to the alarm server. , at least request to send the fall alarm information and alarm location information to the alarm receiving user terminals D1, D2 and D3 of the alarm server C on the network;

Fall alarm information distribution step S3, specifically, the alarm server C searches for alarm receiving user terminals from the preset first search range E1 and sends alarm information and alarm location information to all alarm receiving user terminals in the first search range E1. , when the alarm receiving user terminal in the first search range accepts the alarm feedback, stop searching for his alarm receiving user terminal, and when there is no alarm receiving user terminal in the first search range, the alarm receiving user terminal does not accept the alarm feedback or exceeds the preset duration to accept During the alarm feedback, the alarm server expands to the second search range to search for alarm receiving user terminals, and sends alarm information and alarm location information to all alarm receiving user terminals in the second search range E2. When the alarm receiving user terminals in the second search range E2 When the feedback is received, stop searching for other alarm receiving user terminals. When there is no alarm receiving user terminal in the second search range, when the alarm receiving user terminal does not provide feedback or exceeds the preset time period, the alarm server will send the alarm to the alarm location in turn. The third search range near and far is sent, until the alarm receives user terminal feedback, and stops sending alarm information, wherein the radius of the first search range E1 centered on the position is smaller than the second search range E2, as shown in Figure 6; or ,

The alarm server C finds the alarm receiving user terminal D1 closest to the falling alarm user terminal from all the alarm receiving user terminals on the network, and sends the alarm information to the alarm receiving user terminal D1 and includes the position of the smart helmet or the falling alarm user terminal. The alarm location information of the terminal location, when the nearest alarm receiving user terminal D1 receives the alarm feedback, stop looking for him and the alarm receiving user terminal, when the nearest alarm receiving user terminal D1 does not give feedback or receives the alarm feedback in time, the alarm server expands Find the range, and then send the alarm information and the alarm location information to the alarm receiving user terminal that is the second closest to the location of the fall alarm user terminal, and send the alarm information to the location information near and far in turn, until the alarm receiving user terminal stops sending the alarm. information. At this time, the location information includes the location information of the fall alarm user terminal.

As shown in FIG. 7 , the step S3 of distributing the fall alarm information further includes:

Step S31, searching for an alarm receiving user terminal from a preset first search range.

Step S32, whether there is an alarm receiving user terminal, search for the alarm receiving user terminal in the preset first search range, when the preset first search range has the alarm receiving user terminal, execute step S33, and execute step S36 when it does not exist .

Step S33: Send the alarm information and the location information of the fall alarm user terminal to all alarm receiving user terminals within the first search range.

Step S34, determine whether to receive the alarm receiving user terminal to accept the alarm, when not receiving the alarm receiving user terminal in the first search range to accept the alarm, perform step S36; when receiving any alarm in the first search range The receiving user terminal accepts the alarm When an alarm occurs, step S35 is executed to complete the alarm.

Step S36, when the preset first search range does not have or does not accept the alarm receiving user terminal of the alarm, expand the search range again, search for the alarm receiving user terminal from the preset second search range, and loop steps S32-S36, until repeated To the Nth step, that is, the S3N search range searches for and sends alarm information, etc.

As shown in FIG. 8 , the step S3 of distributing the fall alarm information may also include:

Step S31, searching for the alarm receiving user terminal closest to the fall alarm user terminal.

Step S32, whether there is an alarm receiving user terminal, whether there is an alarm receiving user terminal closest to the fall alarm user terminal, when there is the nearest alarm receiving user terminal, execute step S33, and execute step S36 when there is no alarm receiving user terminal.

Step S33, sending the alarm information and the location information of the fall alarm user terminal to the nearest alarm receiving user terminal.

Step S34, determine whether to receive the alarm receiving user terminal to accept the alarm, when not receiving the most recent alarm receiving user terminal to accept the alarm, execute step S36; when receiving the latest alarm receiving user terminal to receive the alarm, execute step S35 to complete the alarm .

Step S36, when the most recent alarm receiving user terminal does not have or does not accept the alarm receiving user terminal of the alarm, the search range is expanded again, and the second nearest alarm receiving user terminal is searched, and steps S32-S36 are repeated until the Nth step is repeated, That is, the S3N search range finds and sends alarm information, etc.

When the helmet has a positioning function, in the step S1 of determining the helmet fall event, both the fall alarm information triggered by the fall event and the helmet position information are sent outward. At this time, in the step S2 of sending a fall alarm, it is necessary to determine the distance between the helmet position information and the fall alarm user terminal. First, compare the smart helmet position information with the fall alarm user terminal position information. When the threshold is selected, the location information of the smart helmet is selected as the alarm location information to be sent out. When the distance is less than the preset threshold, the location information of the fall alarm user terminal is selected to be sent out as the alarm location information. At this time, the location information includes helmet location information and fall alarm user terminal location information.

According to needs, the step of sending a fall alarm is to synchronously search for the specific contact information preset by the fall alarm user terminal after receiving the alarm location information and the fall alarm information, and pass the public network of the fall alarm user terminal. Send alarm location information and fall alarm information to specific contacts.

According to requirements, the fall alarm information includes danger level information obtained from the collision intensity and health state information of the fall alarm user preset by the fall alarm user terminal.

The above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The recorded technical solutions are modified, or some technical features thereof are equivalently replaced, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

Cycling fall detection smart helmets, including:

Fall information collection module, collect collision data including collision intensity when falling;

The control module makes a decision on whether the collision is a fall event according to the collision intensity input by the fall information acquisition module, generates a fall alarm decision instruction when the collision is a fall event, and outputs the fall alarm information;

The information transmission module, according to the control of the control module, forwards the fall alarm information output by the control module triggered by the fall information acquisition module.
The smart helmet for cycling fall detection according to claim 1, wherein the fall information collection module comprises a sensor and a positioning unit, wherein the sensor comprises a three-axis, six-axis or nine-axis acceleration sensor or/and An angular velocity sensor, the positioning unit includes a Beijing locator and/or a GPS locator.
The smart helmet for riding fall detection according to claim 1, wherein the alarm information includes fall danger level information and help information generated based on the collision intensity information.
The smart helmet for riding fall detection according to claim 1, wherein the information transmission module comprises a short-distance communication module.
The smart helmet for riding fall detection according to claim 4, wherein the short-range communication module comprises a Bluetooth unit.
An intelligent helmet fall alarm system, comprising an alarm server, a fall alarm user terminal and at least one alarm receiving user terminal respectively established in communication with the alarm server, and an intelligent helmet that triggers the fall alarm user terminal to issue an alarm, wherein,

The smart helmet determines whether a fall event has occurred, and triggers the output of the fall alarm information corresponding to the fall event when the fall event occurs;

The fall alarm user terminal establishes a short-distance communication connection with the smart helmet, receives the fall alarm information from the smart helmet when a fall event occurs, and triggers the sending of the fall alarm location information and the received fall alarm information to the alarm server;

The alarm server searches for the alarm receiving user terminal from the preset first search range according to the received position information, and sends the alarm information and the alarm location information to the alarm receiving user terminal in the first search range, when the alarm in the first search range is alarmed When receiving user terminal feedback to accept the alarm, stop searching for other alarm receiving user terminals. When no alarm receiving user terminal accepts alarm feedback or exceeds the preset time to accept the alarm, the preset second search range is searched, and all alarm receiving user terminals are searched. The terminal sends the alarm information and the alarm position information, and the user terminal receives the alarm and stops sending the alarm information until the alarm receiving user terminal accepts the alarm feedback, wherein the radius of the first search range centered on the alarm position is smaller than the radius of the second search range, or,

According to the received location information, find the alarm receiving user terminal closest to the alarm location on the network, and send the alarm information and alarm location information to the alarm receiving user terminal. When the nearest alarm receiving user terminal accepts the alarm feedback, it stops sending other The alarm of the location is sent by the user terminal. When there is no alarm receiving user terminal to accept the alarm feedback or the alarm is accepted after the preset time, the alarm information and the alarm location information are sent to the alarm receiving user terminal that is the second closest to the alarm position, and then the alarm information is sent to the alarm receiving user terminal. Until there is an alarm receiving user terminal to accept the alarm feedback and stop sending the alarm information;

The alarm receiving user terminal receives the fall alarm information and location information distributed by the alarm server, and feeds back the fall alarm acceptance result.
The smart helmet fall alarm system according to claim 6, wherein the alarm location information includes the location information of the smart helmet or the location information of the fall alarm user terminal.
The smart helmet fall alarm system according to claim 6, wherein the fall alarm information includes the fall danger level information obtained from the collision intensity and the fall alarm user health state preset by the fall alarm user terminal information.
The smart helmet fall alarm system according to any one of claims 6-8, wherein the smart helmet comprises a fall information collection module, a fall control module and an information transmission module, wherein,

Fall information collection module, collect collision data including collision intensity when falling;

The control module makes a decision on whether the collision is a fall event according to the collision process data input by the fall information acquisition module, generates a fall alarm decision instruction when the collision is a fall event, and outputs the fall alarm information;

The information transmission module, according to the control of the control module, forwards the fall alarm information output by the control module triggered by the fall information acquisition module.
The smart helmet fall alarm system according to claim 9, wherein the fall information collection module comprises a sensor and a positioning unit, wherein the sensor comprises a three-axis, six-axis or nine-axis acceleration sensor or/and angular velocity A sensor, the positioning unit includes a Beijing locator and/or a GPS locator.
The smart helmet fall alarm system according to claim 6, wherein the fall alarm user terminal and the alarm receiving user terminal respectively comprise mobile communication terminals.
Smart helmet fall alarm methods, including:

The step of determining the helmet fall event, the real-time detection of the collision intensity data of the smart helmet is compared with the preset threshold, and when the helmet collision intensity signal is greater than the preset threshold, it is determined that the detected collision is a fall event, and a fall event is sent to the outside. Fall alarm information and smart helmet location information triggered by fall events;

The step of sending a fall alarm, the fall alarm user terminal that establishes communication with the smart helmet receives and sends the alarm location information including the location of the smart helmet or the fall alarm user terminal and the fall alarm information to the alarm server, and requests the alarm server to send the information to the online server. The alarm receiving user terminal sends fall alarm information and alarm location information;

In the step of distributing fall alarm information, the alarm server searches for alarm receiving user terminals from a preset first search range and sends alarm information to all alarm receiving user terminals in the first search range, including the location of the smart helmet or the location of the fall alarm user terminal. When the alarm receiving user terminal in the first search range accepts the alarm feedback, it stops sending it to other alarm receiving user terminals. When setting the time length to accept the alarm feedback, the alarm server expands to the second search range to find the alarm receiving user terminal, and sends the alarm information and alarm location information to all the alarm receiving user terminals in the second search range. When the terminal feedback accepts the alarm, it stops sending it to other alarm receiving user terminals. When there is no alarm receiving user terminal in the second search range, when the alarm receiving user terminal does not give feedback, or exceeds the preset time period to accept the alarm feedback, the alarm server will send the alarm to the same distance in turn. The alarm information is sent to the search range near and far from the alarm position, until the alarm receiving user terminal feedback stops sending the alarm information, and the alarm information is sent to the retrieval range near and far from the alarm position in turn, until the alarm receiving user terminal feedback stops sending the alarm information, wherein the first The radius of the search range centered at the location is smaller than the second search range; or,

The alarm server searches for the alarm receiving user terminal closest to the alarm position from all the alarm receiving user terminals on the network, and sends the alarm information and alarm position information to the alarm receiving user terminal. When the nearest alarm receiving user terminal feedbacks the alarm acceptance When the alarm receiving user terminal is closest to the alarm receiving user terminal, the alarm server expands the search range, and then sends the alarm information to the alarm receiving user terminal that is the second closest to the alarm location. and alarm location information, and send to the near and far from the alarm location in turn, until the alarm receiving user terminal accepts the alarm feedback and stops sending the alarm information.
The smart helmet fall alarm method according to claim 12, wherein the step of sending a fall alarm further comprises, after receiving the alarm position information and the fall alarm information, firstly sending the smart helmet position information and the fall alarm The location information of the user terminal is compared to determine the distance between the alarm location and the location of the fall alarm user terminal. When the distance is greater than the preset threshold, the location information of the smart helmet is selected as the alarm location information to be sent out. When setting the threshold, choose to send the location information of the fall alarm user terminal as the alarm location information.
The smart helmet fall alarm method according to claim 12 or 13, wherein the step of sending a fall alarm further comprises, after receiving the alarm location information and the fall alarm information, synchronously searching for a fall alarm user terminal advance The set specific contact information, and send the alarm location information and the fall alarm information to the specific contact through the public network of the fall alarm user terminal.
The smart helmet fall alarm method according to claim 13, wherein the fall alarm information includes the danger level information obtained from the collision intensity and the fall alarm user health state information preset by the fall alarm user terminal.
The smart helmet fall alarm method according to claim 15, wherein the step of determining the helmet fall event comprises: monitoring triaxial acceleration according to a preset monitoring frequency; calculating the triaxial acceleration vector sum, and according to Whether the acceleration vector sum satisfies the first preset condition is judged whether a free fall event occurs; according to whether the acceleration of any one of the three axes satisfies the second preset condition, it is judged whether a collision event occurs; according to the detection of each axis Whether the obtained acceleration variation satisfies the third preset condition to determine whether a stationary event occurs; and generates a distress signal according to the stationary event meeting the fourth preset condition; the first preset condition is the acceleration vector and the continuous is less than the first threshold and the duration exceeds the first duration, the second preset condition is that the acceleration of any axis is continuously greater than the second threshold and the duration exceeds the second duration; the third preset condition is the The acceleration change is continuously smaller than the third threshold and the duration exceeds the third time period, and the fourth preset condition is that the stationary event occurs within the fourth time period after the impact event occurs, wherein the third time period shorter than the fourth time period.
The smart helmet fall alarm method according to claim 16, wherein the smart helmet fall detection method further comprises: comparing the time interval between the impact event and the free fall event with a predetermined failure duration; and

Perform the step of judging whether a stationary event occurs according to the comparison result that the time interval is less than or equal to the failure duration, or return to the step of monitoring the triaxial acceleration according to the comparison result that the time interval is greater than the failure duration.
The smart helmet fall alarm method according to claim 16, wherein the first threshold is 0.3-0.6g, the first duration is 400ms-500ms; the second threshold is 1.5-2g, so The second duration is 300ms-450ms; the third threshold is 0.3g-0.6g, the third duration is 8-15s; the fourth duration and the third duration differ by 2-5s.
The smart helmet fall alarm method according to claim 16, wherein the first threshold is 0.54g, the first duration is 450ms, the second threshold is 1.992g, and the second duration is 400ms, the third threshold is 0.5g, the third duration is 11s, and the fourth duration is 15s.
The smart helmet fall alarm method according to claim 16, wherein the fall detection method further comprises: detecting whether the stationary event occurs continuously; and if the stationary event is not detected for three consecutive times, generating an alarm Disarm the signal to stop the distress signal.