CN113812715A - Multifunctional intelligent safety helmet based on sensor - Google Patents

Abstract

The invention discloses a sensor-based multifunctional intelligent safety helmet, which comprises a safety helmet body, a multifunctional device and a monitoring terminal, wherein the safety helmet body is provided with a first end and a second end; the multifunctional device comprises a PCBA circuit board, wherein a DC-DC power supply module, an MCU module, a first 4G communication module, a first voice module, a six-axis sensor and a positioning module are mounted on the PCBA circuit board; the DC-DC power supply module is electrically connected with the MCU module, the first 4G communication module, the first voice module, the six-axis sensor and the positioning module respectively; the MCU module is respectively electrically connected with the first 4G communication module, the first voice module, the six-axis sensor and the positioning module, and the first 4G communication module and the first voice module are respectively in communication connection with the monitoring terminal. The safety helmet has multiple functions, can acquire monitoring data of various constructors, thereby realizing remote monitoring of a construction site, and has the advantages of simple equipment, low power consumption, high detection efficiency and long service life, thereby greatly meeting the requirements of users.

Description

Multifunctional intelligent safety helmet based on sensor

Technical Field

The invention belongs to the technical field of safety helmets, and particularly relates to a multifunctional intelligent safety helmet based on a sensor.

Background

In a construction site, workers need to wear safety helmets in order to protect the safety of the workers. The safety helmet is a protective article for preventing the head from being injured by an impact object, generally comprises a helmet shell, a helmet liner, a lower cheek band and a rear hoop, when the head of an operator is impacted by the impact object, the impact force is instantly decomposed to the whole area of the skull by using the helmet shell and the helmet liner, then most of the impact force is absorbed by using the elastic deformation and the plastic deformation of the buffer structure of each part of the safety helmet and the allowable structural damage, so that the impact force finally applied to the head of the operator is reduced, and the head of the operator is protected.

However, the existing safety helmet only has a protection function of slowing down mechanical impact and does not have an intelligent monitoring function; or have certain intelligent function, but do not have the real-time monitoring function. Therefore, in the dangerous operation process, the behavior track of the operator cannot be monitored at any time, and the first time of danger is rescued. With the continuous development and progress and intelligent management of science and technology, the existing simple protective equipment can not meet the requirements of modern management and maintenance operation, and the multifunctional video data real-time transmission function is realized on the basis of ensuring safety. Therefore, the safety helmet in the prior art has single function, and only simple head protection operation can be performed, so that the efficient and safe production requirement of the modern society is obviously difficult to meet.

Disclosure of Invention

The invention aims to provide a multifunctional intelligent safety helmet based on a sensor, which is used for solving at least one problem in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a sensor-based multifunctional intelligent safety helmet, which comprises a safety helmet body, a multifunctional device arranged on the safety helmet body and a monitoring terminal in communication connection with the multifunctional device;

the multifunctional device comprises a shell, the shell is mounted on the inner wall of the front side of the safety helmet body, a PCBA circuit board is arranged in the shell, and a DC-DC power module, an MCU module, a first 4G communication module, a first voice module, a six-axis sensor and a positioning module are mounted on the PCBA circuit board;

the DC-DC power supply module is electrically connected with the MCU module, the first 4G communication module, the first voice module, the six-axis sensor and the positioning module respectively;

the MCU module is respectively electrically connected with the first 4G communication module, the first voice module, the six-axis sensor and the positioning module, and the first 4G communication module and the first voice module are respectively in communication connection with the monitoring terminal.

In one possible design, the multifunctional device further includes a lighting module electrically connected to the DC-DC power supply module and the MCU module, respectively.

In one possible design, the multifunctional device further comprises an infrared sensor electrically connected to the DC-DC power supply module and the MCU module, respectively.

In a possible design, a light hole is formed in one side of the shell facing the head of the human body, and the infrared signal emitted by the infrared sensor can penetrate out of the light hole.

In one possible design, the multifunctional device further includes a temperature sensor electrically connected to the DC-DC power supply module and the MCU module, respectively.

In a possible design, the monitoring terminal comprises a central controller, an alarm module, a second 4G communication module, a display module and a second voice module, wherein the central controller is respectively connected with the alarm module, the second 4G communication module, the display module and the second voice module electrically, the second 4G communication module is in communication connection with the first 4G communication module, and the second voice module is in communication connection with the first voice module.

In one possible design, the DC-DC power module is powered using a polymer lithium battery power supply.

In one possible design, the positioning module is a GPS positioning module or a BDS positioning module.

Has the advantages that:

according to the multifunctional helmet, the power module is arranged on the helmet body, so that the multifunctional device can be continuously powered; by arranging the 4G communication module, the remote communication between the safety helmet and the monitoring terminal can be realized; the first voice module is arranged to realize the broadcast reminding of the alarm information and the two-way call with the monitoring terminal; the intelligent safety helmet and the constructors can be accurately positioned by arranging the positioning module; whether the safety helmet is worn or not is detected by the distance measuring function of the infrared sensor, and whether the safety helmet is normally worn or not and whether a falling event occurs or not is detected by the motion state detection function of the six-axis sensor; the lighting module is arranged to meet the lighting requirement of a user when ambient light is dark. Based on the above, the safety helmet in this embodiment has multiple functions, can acquire multiple constructor's monitoring data to the realization is to job site's remote monitoring, and this multifunctional device equipment is simple, the consumption is lower, detection efficiency is high and long service life, has greatly satisfied user's demand.

Drawings

FIG. 1 is a block diagram of the circuit structure of the multifunctional intelligent safety helmet based on sensor in the present embodiment;

FIG. 2 is a schematic structural diagram of the multifunctional apparatus in the embodiment;

FIG. 3 is a schematic structural view of the helmet body to which the multifunction device is attached in this example;

FIG. 4 is a schematic circuit diagram of the MCU module in this example;

fig. 5 is a schematic circuit diagram of the 4G communication module in this embodiment;

fig. 6 is a schematic circuit diagram of a first voice broadcast module in this embodiment;

FIG. 7 is a schematic block diagram of the circuitry of the positioning module in this example;

FIG. 8 is a schematic circuit diagram of a six-axis sensor according to the present embodiment;

FIG. 9 is a schematic circuit diagram of the infrared sensor in this example;

fig. 10 is a schematic circuit diagram of the lighting module according to this embodiment.

Wherein, 1-the safety helmet body; 2-a multifunctional device; 3-monitoring the terminal; 4-a shell; a 5-DC-DC power module; 6-MCU module; 7-a first 4G communication module; 8-a first speech module; 9-six axis sensors; 10-a positioning module; 11-a lighting module; 12-an infrared sensor; 13-light-transmitting holes; 14-a temperature sensor; 15-a central controller; 16-an alarm module; 17-a second 4G communication module; 18-a display module; 19-second speech module.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are some, but not all embodiments of the present disclosure. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments in the present description, belong to the protection scope of the present invention.

Examples

As shown in fig. 1-10, the present invention provides a multifunctional intelligent safety helmet based on a sensor, which comprises a safety helmet body 1, a multifunctional device 2 disposed on the safety helmet body 1, and a monitoring terminal 3 communicatively connected to the multifunctional device 2; the multifunctional device 2 comprises a shell 4, the shell 4 is mounted on the inner wall of the front side of the helmet body 1, a Printed Circuit Board Assembly (PCBA) Circuit Board is arranged inside the shell 4, and a Direct Current (DC) power module 5, a Micro Controller Unit (MCU) module, a first 4G communication module 7, a first voice module 8, a six-axis sensor 9 and a positioning module 10 are mounted on the PCBA Circuit Board; the DC-DC power supply module 5 is electrically connected with the MCU module 6, the first 4G (4generation) communication module, the first voice module 8, the six-axis sensor 9 and the positioning module 10 respectively; the MCU module 6 is respectively electrically connected with the first 4G communication module 7, the first voice module 8, the six-axis sensor 9 and the positioning module 10, and the first 4G communication module 7 and the first voice module 8 are respectively in communication connection with the monitoring terminal 3.

Preferably, the MCU module 6 may adopt a processor with an ARM Cortex M0 core, and is based on a high-performance ARM core-M0 + 32-bit RISC (Reduced Instruction Set Computer) core. The MCU integrates a memory protection unit, a high-speed embedded memory, a DMA (direct memory access), a wide range of system functions, an enhanced I/O (input-output serial port), and peripheral devices. These devices provide standard communication interfaces, a 12-bit ADC (assembler instruction) with up to 19 channels, a low-power RTC (Real Time Clock), a Clock chip), an advanced control PWM (Pulse width modulation) timer, five general purpose 16-bit timers, two basic watchdog timers and a SysTick timer. The MCU allows operation in an ambient temperature range of-40 to 85 ℃ and can operate at a power supply voltage of 2.0V to 3.6V, further improving the cruising ability of the multifunctional device 22; the VBAT of the MCU directly operates the battery input to supply power to the RTC and the backup register, and therefore safety and stability of equipment data are guaranteed.

Preferably, the 4G communication module supports multiple network standards of TDD-LTE/FDD-LTE/4G and a network broadband of multiple frequency bands. More preferably, the embodiment adopts an L610-CN-02 module of FIBOCOM L610-CN series, the working voltage of the module is 3.4V to 4.3V, the working environment temperature range of the module can reach-30 ℃ to +75 ℃, and the requirement on the temperature adaptability of the module in most scenes can be met.

Preferably, the power module 5 is a DC-DC power chip, which can improve conversion efficiency and reduce loss during operation; when the 4G communication module is powered, the power module 5 raises the battery voltage from 3.6V to 4V for the DC-DC power chip to supply power. In order to provide a sustainable power supply for the multifunctional device 2, the DC-DC power supply chip supplies power by using a polymer lithium battery power supply, wherein the polymer lithium battery power supply has various advantages of high specific energy, miniaturization, ultra-thinning, light weight, high safety and the like. Based on such advantages, the lithium polymer battery can be made into any shape and capacity, so as to meet the power supply requirement of the multifunctional device 2 of the embodiment; and it adopts the plastic-aluminum packing, and inside problem appearing can show through the extranal packing immediately, even if there is the potential safety hazard, also can not explode, only can the tympanites. In polymer batteries, the electrolyte serves the dual function of a separator and an electrolyte: on one hand, the positive and negative electrode materials are isolated like a diaphragm, so that self-discharge and short circuit do not occur in the battery, and on the other hand, lithium ions are conducted between the positive and negative electrodes like electrolyte. The polymer electrolyte not only has good conductivity, but also has the characteristics of light weight, good elasticity, easy film formation and the like of a high polymer material, and meets the requirements of light weight, safety, high efficiency and environmental protection of a chemical power supply.

The MUC module may control the operating state of the DC-DC power module 5, and is further used to control the operating mode of the 4G communication module. When the 4G communication module does not need to work, the MCU module 6 controls the 4G communication module to enter a low power consumption mode state, so that the power consumption loss is reduced; and when the whole multifunctional device 2 enters the dormant state, the MCU module 6 can directly close the DC-DC power module 5, the 4G communication module is completely powered off at the moment, no power is consumed, the multifunctional device 2 consumes energy at the uA level at the moment, the power consumption cannot exceed 300uA, and the cruising ability of the multifunctional device 2 is improved.

Wherein, it is preferred, the voice broadcast module adopts TTS voice broadcast module, through 4G communication module and microphone module, realizes digital voice broadcast alarm information to can realize with monitor terminal 3's long-range two-way voice conversation.

Preferably, the Positioning module 10 is a GPS (Global Positioning System) Positioning module 10 or a BDS (BeiDou Navigation Satellite System) Positioning module 10, so as to realize accurate Positioning of constructors, and when an accident occurs, quick rescue can be realized through the Positioning module 10, and life safety of the constructors is ensured.

The specific working principle of the multifunctional device 2 of the present embodiment when performing positioning is as follows:

first, the operation mode of the multifunctional apparatus 2 may be a real-time positioning mode or a timing positioning mode. The working state of the real-time positioning mode is judged by the six-axis sensor 9, when the sensor continuously vibrates, the multifunctional device 2 sends data to the monitoring terminal 3 according to preset interval time, and at the moment, the positioning module 10 and the 4G communication module are in working states; the wake-up frequency of the timing positioning mode is controlled by an RTC (Real Time Clock) in the MCU module 6, and preferably, the wake-up frequency may be a work mode that wakes up once or more times per day.

Specifically, in the real-time positioning mode, under the condition that the sensor keeps vibrating, the multifunctional device 2 does not turn off the GPS positioning module 10 or the BDS positioning module 10, and does not enable the 4G communication module to enter the sleep state, so that the multifunctional device is always connected with the monitoring terminal 3, and the positioning data of the constructors are updated in real time; then, when the multifunctional device 2 is switched from the moving state to the static state and reaches a first time threshold, for example, 3 minutes, the MCU module 6 controls to enter the sleep state, and at this time, the real-time data uploading function of the GPS positioning module 10 and the 4G communication module is turned off, and the multifunctional device enters the sleep state again only after waking up and reporting data once at a certain interval. When the dormancy return interval is smaller than the second time threshold, for example, smaller than 15 minutes, the platform can be positioned and uploaded through the short message instruction or the vibration awakening device, and when the dormancy return interval is larger than 15 minutes, the platform can only be positioned and uploaded through the vibration awakening device.

Specifically, in the timing positioning mode, the operation time of the device is controlled within a first time threshold value, for example, within 3 minutes, when the device wakes up each time, which requires that positioning and cellular communication must be completed within 3 minutes, so that the power consumption of the device is reduced as much as possible when the device wakes up each time. In addition, in order to increase the Positioning speed of the BDS Positioning module 10, an AGPS (Assisted Global Positioning System) function is designed in the System. When the 4G communication module wakes up to work each time, the AGPS function is first started to connect the AGPS server, then AGPS data is injected into the positioning module 10 at the highest speed, and then the function of data connection is performed. Due to the addition of the AGPS function, the positioning speed can be improved to be within the fastest 20S. If the satellite signal is very good, the device can complete one-time data transmission within about 40 seconds at the fastest speed, so that the working power consumption of equipment awakening each time can be greatly reduced. If the 4G signal and the positioning signal are abnormal and normal data connection cannot be completed, the MCU module 6 stores the data after 3 minutes and directly enters a dormant state.

In conclusion, the device ensures that the working time of the whole machine can be prolonged as much as possible after the equipment is fully charged each time on the basis of the working logic.

In one possible design, the multifunctional device 2 further comprises an illumination module 11, and the illumination module 11 is electrically connected with the DC-DC power supply module 5 and the MCU module 6 respectively, so as to be used for illumination when ambient light is dark by constructors. Preferably, the lighting module 11 is an LED lighting module 11, and the MCU module 6 controls the magnitude of the current output of the LED lighting module 11 and the power module 5 supplies power to the LED lighting module 11. The MCU module 6 controls the amount of current supplied to the LED lighting module 11 by programming a program code to control the brightness of the LED lighting module 11, and the MCU module 6 can ensure that there is no power loss when the LED lighting module 11 is not in operation.

In one possible design, the multifunctional device 2 further comprises an infrared sensor 12, the infrared sensor 12 being electrically connected to the DC-DC power supply module 5 and the MCU module 6, respectively. The infrared sensor 12 includes an infrared signal emitting diode and an infrared signal receiving diode, and emits an infrared signal of a specific frequency through the infrared signal emitting diode, and receives a signal reflected by the infrared signal of the specific frequency through the infrared signal receiving diode, that is, the distance between obstacles is measured by using different signal reflection intensities of the distance between the infrared signal and the obstacle. Preferably, a light hole 13 is formed on one side of the shell 4 facing the head of the human body, and the infrared signal emitted by the infrared sensor 12 can pass through the light hole 13. Whether the safety helmet is worn or not is detected by using the distance measuring function of the infrared sensor 12, and whether the safety helmet is worn according to the standard or not and whether a safety helmet falling event occurs or not is detected by using the motion state measuring function of the six-axis sensor 9, so that the occurrence of alarm false triggering events is reduced.

In one possible design, the multifunctional device 2 further comprises a temperature sensor 14, and the temperature sensor 14 is electrically connected to the DC-DC power supply module 5 and the MCU module 6, respectively, so that it can be further determined that the obstacle encountered by the infrared signal emitted by the infrared sensor 12 is a human head.

In a possible design, the monitoring terminal 3 includes a central controller 15, an alarm module 16, a second 4G communication module 17, a display module 18, and a second voice module 19, where the central controller 15 is electrically connected to the alarm module 16, the second 4G communication module 17, the display module 18, and the second voice module 19, respectively, the second 4G communication module 17 is in communication connection with the first communication module, and the second voice module 19 is in communication connection with the first voice module 8.

Based on the above disclosure, in the embodiment, by providing the power module 5 on the helmet body 1, the multifunctional device 2 can be continuously powered; by arranging the 4G communication module, the remote communication between the safety helmet and the monitoring terminal 3 can be realized; the first voice module 8 is arranged to realize the broadcast reminding of the alarm information and the two-way call with the monitoring terminal 3; the intelligent safety helmet and the constructors can be accurately positioned by arranging the positioning module 10; whether the safety helmet is worn or not is detected by the distance measuring function of the infrared sensor 12, and whether the safety helmet is normally worn or not and whether a falling event occurs or not is detected by the motion state detection function of the six-axis sensor 9; the lighting module 11 is arranged to meet the lighting requirement of the user when the ambient light is dark. Based on the above, the safety helmet in this embodiment has multiple functions, can acquire multiple constructor's monitoring data to the realization is to job site's remote monitoring, and 2 equipment of this multi-functional device are simple, the consumption is lower, detection efficiency is high and long service life, have greatly satisfied user's demand.

Finally, it should be noted that: the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The multifunctional intelligent safety helmet based on the sensor is characterized by comprising a safety helmet body (1), a multifunctional device (2) arranged on the safety helmet body (1) and a monitoring terminal (3) in communication connection with the multifunctional device (2);

the multifunctional device (2) comprises a shell (4), the shell (4) is installed on the inner wall of the front side of the helmet body (1), a PCBA circuit board is arranged inside the shell (4), and a DC-DC power module (5), an MCU module (6), a first 4G communication module (7), a first voice module (8), a six-axis sensor (9) and a positioning module (10) are installed on the PCBA circuit board;

the DC-DC power supply module (5) is electrically connected with the MCU module (6), the first 4G communication module (7), the first voice module (8), the six-axis sensor (9) and the positioning module (10) respectively;

the MCU module (6) is respectively electrically connected with the first 4G communication module (7), the first voice module (8), the six-axis sensor (9) and the positioning module (10), and the first 4G communication module (7) and the first voice module (8) are respectively in communication connection with the monitoring terminal (3).

2. Sensor-based multifunctional smart headgear according to claim 1, characterized in that the multifunctional device (2) further comprises a lighting module (11), the lighting module (11) being electrically connected with the DC-DC power supply module (5) and the MCU module (6), respectively.

3. Sensor-based multifunctional smart headgear according to claim 1, characterized in that the multifunctional device (2) further comprises an infrared sensor (12), the infrared sensor (12) being electrically connected with the DC-DC power supply module (5) and the MCU module (6), respectively.

4. Sensor-based multifunctional intelligent safety helmet according to claim 3, characterized in that the side of the shell (4) facing the head of the human body is provided with a light hole (13), and the infrared signal emitted by the infrared sensor (12) can pass through the light hole (13).

5. Sensor-based multifunctional smart headgear according to claim 1, characterized in that the multifunctional device (2) further comprises a temperature sensor (14), the temperature sensor (14) being electrically connected with the DC-DC power supply module (5) and the MCU module (6), respectively.

6. The sensor-based multifunctional intelligent safety helmet according to claim 1, characterized in that the monitoring terminal (3) comprises a central controller (15), an alarm module (16), a second 4G communication module (17), a display module (18) and a second voice module (19), the central controller (15) is electrically connected with the alarm module (16), the second 4G communication module (17), the display module (18) and the second voice module (19), respectively, the second 4G communication module (17) is in communication connection with the first 4G communication module, and the second voice module (19) is in communication connection with the first voice module (8).

7. The sensor-based multifunctional intelligent safety helmet according to claim 1, characterized in that the DC-DC power module (5) is powered by a polymer lithium battery power source.

8. Sensor-based multifunctional smart headgear according to claim 1, characterized in that the positioning module (10) is a GPS positioning module or a BDS positioning module.

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